GH4145 (Inconel X-750 / UNS N07750) Precipitation Hardening Nickel Superalloy
GH4145 (Inconel X-750 / UNS N07750) Precipitation Hardening Nickel Superalloy
GH4145 (Inconel X-750 / UNS N07750) Precipitation Hardening Nickel Superalloy
GH4145 (Inconel X-750 / UNS N07750) Precipitation Hardening Nickel Superalloy
GH4145 (Inconel X-750 / UNS N07750) Precipitation Hardening Nickel Superalloy
As a leading supplier and manufacturer in China, GNEE Steel provides cost-effective nickel-based alloy products.
- Send E-mail: ss@gneesteel.com
- Tel: +8615824687445
Gnee Alloy GH4145: Key Global Export Markets
We maintain a stable base of long-term, high-volume clients across all regions with significant demand for superalloys. The following market-specific purchasing patterns may assist you in material selection:
| Region / Country | Procurement Characteristics |
|---|---|
| Kazakhstan & CIS Countries (Largest export demand market for GH4145) | Large‑scale framework bulk orders involving military aviation MRO (Maintenance, Repair & Overhaul) and local thermal power plant bolt & spring replacement; mandatory requirement for aviation‑grade bars and sheets produced by VIM+VAR dual‑refining process; complete dual‑use export license documentation required for customs clearance audit; products fully comply with local aviation material technical standards. |
| India & Pakistan (Fast‑growing repeat‑purchase market) | Combination of small trial orders and annual long‑term framework bulk contracts; primary demand for industrial‑grade GH4145 sheets and pipes for domestic aviation fleets and offshore oil equipment OEMs; highly price‑sensitive and value flexible MOQ (Minimum Order Quantity) policies. |
| Middle East (UAE, Saudi Arabia, Saudi Arabia) | Mainly MRO emergency replenishment orders; primarily procure GH4145 seamless pipes and sheets for offshore petrochemical high‑temperature downhole equipment; strict requirement for MTC 3.2 full‑item third‑party material test certificates for factory supplier audits. |
| Southeast Asia (Vietnam, Thailand) | Customer base includes local gas turbine component processing factories and automotive turbocharger spring manufacturers; procure bar blanks and 2B‑finish sheets for secondary CNC machining; extremely focused on fast delivery lead times; support very low MOQ small trial orders. |
| Western Europe (Germany, France) |
Main customers are high‑end automotive turbocharger OEMs and semiconductor furnace manufacturers; demand BA bright‑finish ultra‑thin GH4145 sheets; each batch must provide SGS/TUV third‑party witness inspection reports to comply with European factory audit standards. |
Contact us to create a tailored solution for your project
GH4145 Alloy Description
Gnee Alloy GH4145 Nickel Alloy Description
GH4145 (internationally known as Inconel X-750) is a precipitation-hardening superalloy based on nickel and chromium, with additions of iron, titanium, and aluminum. It maintains high strength and oxidation resistance at temperatures up to 980°C and exhibits excellent relaxation resistance below 540°C. Additionally, it offers outstanding creep-rupture strength and structural stability under high-temperature, high-stress conditions, along with good formability and weldability. Available product forms include sheet, strip, bar, and tubing.
Typical applications include aerospace (aircraft engine coil springs, thrust reverser components, turbine blades), the oil and gas industry (downhole equipment requiring resistance to high stress and corrosive environments), and general industry (pollution control systems, chemical processing equipment, and heat treatment fixtures).
Equivalent grades for GH4145
| Production Standard | Description |
|---|---|
| GB/T 14992-2005 | Superalloy standard for GH series alloys. |
| ASTM B637 | Standard specification for precipitation-hardened nickel alloy bar, rod, and wire. |
| AMS 5662 | Specification for Nickel Alloy, Bars, Forgings, and Rings, 50Ni – 19Cr – 3.0Ti – 1.4Al – 5.0(Nb + Ta), 1775°F (968°C) Solution Heat Treated, Precipitation Hardened. |
| AMS 5663 | Specification for Nickel Alloy, Bars, Forgings, and Rings, 50Ni – 19Cr – 3.0Ti – 1.4Al – 5.0(Nb + Ta), 1775°F (968°C) Solution Heat Treated, Precipitation Hardened (Alternate to AMS 5662). |
| ISO 15156/NACE MR0175 | Standards for materials in H2S-containing environments in oil and gas production. |
Available product forms of GH4145
Contact our experts to recommend the right alloy for your project
high temperature GH4145 Alloy Specification
| Parameter | GH4145 (GH145) |
|---|---|
| Material Type | Precipitation-hardening nickel-based wrought superalloy (γ′ phase strengthened) |
| Equivalent Grades | Inconel X-750 (USA UNS N07750), NiCr15Fe7TiAl (Germany), NC15FeTNbA (France), NCF750 (Japan) |
| Product Forms | Plate, sheet, strip, bar, forging, ring blank, wire, tube |
| Typical Applications | Aero-engine springs (planar, helical, compression), turbine blades, structural rings, bolts, gas turbine components, nuclear reactor internals, petrochemical equipment |
| Service Temperature | High strength up to 800°C; stress relaxation resistance up to 540°C; corrosion/oxidation resistance up to 980°C |
| Strengthening Mechanism | Precipitation hardening (γ′ phase Ni₃(Al,Ti,Nb), ~14.5% volume fraction) + carbide strengthening (Ti(C,N), Nb(C,N), M₂₃C₆) |
| Density | 8.25 – 8.28 g/cm³ |
| Melting Range | 1393 – 1427°C |
| Magnetic Properties | - |
| Applicable Standards | GB/T 14992, GJB 1952, GJB 2612, GB/T 14994, GB/T 14995, GB/T 14996, YB/T 5249, GB/T 15062, Q/3B 4088 (capillary), Q/3B 4098 (wire), Q/3B 4198 (plate/strip) |
Key Properties of GH4145 Alloy
Chemical composition of GH4145 alloy (wt%)
| Element | Content Range (wt%) | Role / Engineering Significance |
|---|---|---|
| Nickel (Ni) | ≥ 70.0 (Balance) | Matrix element - provides austenitic structure, corrosion resistance, and high-temperature stability |
| Chromium (Cr) | 14.0 – 17.0 | Core oxidation/corrosion resistance - forms Cr₂O₃ protective oxide scale |
| Iron (Fe) | 5.0 – 9.0 | Matrix element - Fe-Ni base with high Ni content |
| Titanium (Ti) | 2.25 – 2.75 | Core strengthening element - forms γ′ phase Ni₃(Al,Ti,Nb) precipitate |
| Niobium + Tantalum (Nb+Ta) | 0.70 – 1.20 | Core strengthening element - forms γ′ phase; stabilizes carbides |
| Aluminum (Al) | 0.40 – 1.00 | Forms γ′ precipitate; contributes to oxidation resistance |
| Cobalt (Co) | ≤ 1.00 | Trace element control |
| Carbon (C) | ≤ 0.08 | Carbide former (TiC, NbC, M₂₃C₆) - grain boundary strengthening |
| Manganese (Mn) | ≤ 1.00 (bar/forging/wire); ≤ 0.35 (plate/strip/tube) | Deoxidation; product form dependent |
| Silicon (Si) | ≤ 0.50 (bar/forging/wire); ≤ 0.35 (plate/strip/tube) | Deoxidation; product form dependent |
| Sulfur (S) | ≤ 0.010 – 0.015 | Strictly controlled - ensures hot workability and weldability |
| Phosphorus (P) | ≤ 0.015 – 0.020 | Strictly controlled - ensures toughness |
| Copper (Cu) | ≤ 0.50 | Impurity element control |
Physical Properties of GH4145 Alloy
| Property | Value | Unit |
|---|---|---|
| Density | 8.25 – 8.28 | g/cm³ |
| Melting Range | 1393 – 1427 | °C |
| Thermal Conductivity (100°C) | 14.7 | W/(m·K) |
| Specific Heat | - | J/(kg·K) |
| Elastic Modulus (RT) | 213.7 | GPa |
| Shear Modulus | - | GPa |
| Electrical Resistivity (50°C) | 1.22 | μΩ·m |
| Poisson's Ratio | 0.29 | - |
| CTE (20–100°C) | 13.1 × 10⁻⁶ | /°C |
Click to download the GH4145 alloy PDF file now
GH4145 Room Temperature Mechanical Properties – Solution Treated Condition
| Test Temperature | Min Tensile Strength Rm (MPa) | Min Yield Strength Rp0.2 (MPa) | Min Elongation A (%) | Core Matching Working Scenario |
|---|---|---|---|---|
| Room Temperature | ≥1170 | ≥795 | ≥32 | Cold coiled spring blanks, high-tension bolt raw material |
| 540℃ Long Cycle Relaxation Test | ≥820 | ≥600 | ≥22 | Aviation wave springs, power station sealing springs (core advantage temperature zone) |
| 700℃ Continuous Bearing Service | ≥750 | ≥550 | ≥15 | Gas turbine fasteners, engine medium-temperature structural rings |
| 800℃ Short Peak Intermittent Temp | ≥480 | ≥320 | ≥20 | Intermittent heating petrochemical furnace flange components |
Stable operating temperature range for GH4145
Long-term continuous safe bearing service temperature: ≤800℃
Core relaxation advantage temperature zone: ≤540℃ (best anti-stress relaxation performance)
Short-term instantaneous peak oxidation tolerance: Up to 980℃
Oxidation benchmark: 800℃ static air oxidation weight gain ≤0.22mg/cm²·h, excellent anti-sulfide & chloride corrosion performance for offshore oil downhole equipment
Contact us for information on our GH4145 production process
GH4145 heat treatment process
| Condition | Temperature | Cooling | Application |
|---|---|---|---|
| Solution Treatment (Supply) | 980°C ± 15°C | Air Cool (AC) | Plate, sheet, tube – standard delivery condition |
| Annealing (Intermediate) | 955 – 1010°C | Water Cool (WQ) | Intermediate forming operations |
| Pre-Weld Annealing | 980°C, 1h | - | Welded components prior to welding |
| Post-Weld Stress Relief | 900°C, 2h | - | Welded components after welding |
| Stress Relief Annealing | 885°C ± 15°C, 24h | Air Cool (AC) | Stress relief for finished parts |
Click to view the GH4145 heat treatment process curve
Three Core GH4145 Export Product Lines, Full Production Flow & Global Standard Export Specifications
GH4145 Round Bar
GH4145 Production Process
Industrial General Grade (General Furnace, Ordinary Petrochemical Non-Critical Fasteners): Single VIM vacuum induction melting → hot rolling/hot forging → standard three-stage solution + double aging heat treatment → straightening → surface processing → conventional UT ultrasonic inspection
Aviation & Offshore Premium Grade (Mandatory for Aero Engine Springs, Offshore Downhole Fasteners): VIM+VAR double vacuum melting → hot forming → precise temperature-controlled dual aging heat treatment → 100% UT + MT magnetic particle full NDT inspection, Class A internal flaw level, meets global aviation & oil operator supplier audit standards, complete dual-use material export permit documents available for Kazakhstan, CIS, EU aerospace clients.
GH4145: Three Standard Export Surface Conditions
| Surface Finish | Key Features | Target Buyers / Applications |
|---|---|---|
| Black Hot Rolled / Forged Raw Surface | Lowest unit procurement cost; retains original hot‑forming oxide skin | Global fastener cold heading factories; spring wire blank manufacturers; heavy machinery CNC blank purchasers |
| Centerless Peeled Bright (Ra ≤ 1.6 μm) | Completely removes surface decarburization layer; uniform bright surface for easy visual defect inspection | Most popular export finish for mass‑production gas turbine bolt shafts; saves customers one peeling process and labor cost |
| Precision Centerless Ground / Polished (h8/h9 tolerance, Ra ≤ 0.8 μm) | Ultra‑strict dimensional tolerance; mirror‑smooth surface | Aerospace precision spring manufacturers; high‑temperature bolt & elastic sealing ring OEMs with high‑precision drawing requirements |
GH4145: Standard specifications available from stock (supports rapid emergency MRO delivery)
| Parameter | Specification |
|---|---|
| Diameter Series | Small bar: Φ10 mm ~ Φ35 mm; Medium bar: Φ40 mm ~ Φ120 mm; Large customized forged billet: Φ130 mm ~ Φ500 mm |
| Length Specification | Random length: 2000 mm ~ 5000 mm (standard stock); Customizable fixed cutting length: 500 mm ~ 3000 mm per customer technical drawings |
| Tolerance Benchmark | Hot rolled blank: h10 / h11; Precision ground / polished bar: h8 / h9 tight tolerance |
Core Global Export Application of GH4145 Round Bar
Aerospace & Military MRO: Aero engine wave springs, spiral sealing springs, 540℃ medium-temperature fastening bolts, compressor structural ring blanks
Offshore Oil & Gas Operators: Downhole packer support shafts, high-temperature wellhead clamping bolts, anti-H₂S corrosion fastener raw material
Power Gas Turbine OEMs: Combustion chamber elastic support shafts, long-term anti-relaxation thermal cycle structural blanks
Petrochemical Plant: High-temperature reactor flange fixing bolts, anti-corrosion pipeline clamping brackets
GH4145 Cold Rolled Sheet & Hot Rolled Plate
Manufacturing Process for GH4145 Export Products
VIM/VIM+VAR vacuum smelting ingot → multi-pass cold rolling + intermediate stress relief annealing → 980℃ solution treatment + rapid air cooling → standard dual aging hardening → high-precision leveling to meet international export flatness tolerance standard → laser cutting blank one-stop service → full metallurgical grain & surface visual inspection before shipment
Surface Treatment for Export GH4145 Sheets/Plates
| Surface Finish | Key Features | Target Buyers / Applications |
|---|---|---|
| 2B Cold Rolled Annealed Pickled Matte (No.1 Global Export Grade, 76% bulk orders choose this finish) | Uniform matte grey pickled surface; balanced cost; moderate stamping ductility; excellent TIG welding performance | Global aerospace sealing thin sheet mass production manufacturers; gas turbine compartment shielding plate OEMs |
| BA Bright Annealed Mirror | Annealed under inert protective gas; zero surface oxide layer; ultra‑high surface cleanliness | Semiconductor thermal equipment manufacturers; high‑standard aviation thin‑wall sealing component processing factories |
| No.1 Hot Rolled Annealed Pickled Plate | Dark matte oxide‑free surface; applicable only for plates over 4 mm thickness | Large industrial furnace mass lining production OEMs with low surface precision requirements |
| Sand Blasted / Shot Peened Rough Surface | Uniform matte rough surface; used as base substrate for thermal barrier coating (TBC) | Global gas turbine hot‑section component coating processing factories |
Standard Size Specifications for GH4145 Sheet/Plate Exports (Standard Stock Sizes)
| Parameter | Specification |
|---|---|
| Thickness Classification | Cold rolled thin sheet: 0.05 mm ~ 3.0 mm; Hot rolled thick plate: 4.0 mm ~ 12.0 mm |
| Standard Export Width | 1000 mm / 1219 mm / 1500 mm; Customizable slitting width for special non-standard equipment |
| Compliance Standards | GB/T 14992, AMS 5542 (aviation standard), ASTM B637; Support third-party SGS/TUV test reports matching overseas customer internal audit requirements |
Core Export Application of GH4145 Sheet & Plate
Aerospace Core OEMs: Jet engine compressor casing sealing thin plates, afterburner elastic heat shielding baffles, 540℃ anti-relaxation partition sheets
Offshore Oil Equipment: High-temperature reactor anti-corrosion lining plates, wellhead sealing flat sheet raw material
Vacuum Furnace Equipment Factory: Medium-temperature furnace integral lining plates, repeated heating-cooling thermal shock resistant structural panels
Petrochemical High-Temperature Equipment: High-temperature cracking furnace flange separation sheets, waste heat recovery pipeline lining plates
GH4145 Seamless Tube
Complete Production Process for GH4145 Tubing (Export Standard: Zero Wall Thickness Deviation)
Vacuum melted GH4145 tube blank → cold pilger + multi-pass cold drawing to strictly control wall thickness deviation → full solution + dual aging heat treatment to eliminate cold working residual stress → 100% eddy current + ultrasonic dual NDT inspection to detect internal tube wall defects → surface finishing & customized tube end flanging/threading processing
Three delivery surface conditions for GH4145 seamless pipes
| Tube Finish | Surface Description | Target Market / Typical Application |
|---|---|---|
| BA Bright Annealed | Mirror, oxide‑free, ultra‑clean surface | Mainly exported to semiconductor diffusion furnace manufacturers |
| AP Pickled & Annealed | Matte grey, cost‑effective surface | Mainstream global orders for medium‑temperature furnace radiant heating tubes |
| 180~600 Grit Mirror Polished | Mirror‑polished surface | Dedicated tubing for precision instrument thermocouple protection sleeves and aerospace hydraulic high‑pressure pipelines |
Export specifications for GH4145 seamless pipes
| Parameter | Specification |
|---|---|
| Outer Diameter Classification | Capillary tube: Φ10 – 30 mm; Thin wall tube: Φ30 – 140 mm; Heavy wall customized tube: Φ140 – 320 mm |
| Wall Thickness | 0.5 mm – 25 mm; Customizable ultra‑thin wall and extra heavy wall per customer drawing specifications |
| Custom Processing Services | Fixed length cutting, tube end flanging, threading, sealing cap processing for overseas pipeline manufacturers |
Application Industries for GH4145 Seamless Pipes
Furnace & Thermal Equipment Factory: Medium-temperature furnace radiant heating tubes, heating element protection sleeves working under ≤800℃
Instrument & Sensor Manufacturers: High-temperature thermocouple protection tubes, 540℃ anti-relaxation heat probe outer casings
Offshore Oil & Gas Operators: Downhole high-pressure delivery pipelines, wellhead anti-corrosion heat-resistant tubing
Semiconductor Manufacturing Plant: Ultra-clean medium-temperature diffusion furnace process piping
Nickel Based Alloy GH4145 Packaging
GNEE Group Alloy GH4145 Product Packaging
Why GH4145 is the Preferred Choice Over GH2132 and GH4169
Industry-leading stress relaxation resistance at 540°C (Core competitive advantage)
Field procurement data from over 380 global manufacturers shows that under sustained loading at 540°C, GH4145 retains 42% more residual stress than GH2132 and extends spring service life by 2.6 times. This effectively resolves common pain points for MRO (Maintenance, Repair, and Overhaul) clients in the aviation and power generation sectors-specifically, long-term bolt loosening and spring elasticity loss associated with standard precipitation-hardened alloys
Balances medium-temperature creep resistance with corrosion resistance, suitable for offshore oilfield conditions
Compared to GH4169, GH4145 offers superior resistance to H₂S and chloride stress corrosion cracking, making it an ideal choice for high-temperature downhole sealing components in offshore applications. Its comprehensive creep strength at 600–800°C meets design requirements for gas turbine fasteners, while its raw material cost remains moderate, avoiding excessive price premiums.
Excellent cold-forming plasticity, ideal for mass production of spring-type elastic components
Solution-treated GH4145 stock exhibits outstanding cold-coiling capabilities, resulting in low cracking rates during mass production. Its processing characteristics surpass those of the high-nickel GH4169, allowing customers to reduce tool wear costs during spring manufacturing by 25%.
Proven standard three-stage aging heat treatment process; consistent batch hardness
Utilizing a mature heat treatment process (solution treatment followed by two-stage aging), the finished product's hardness is consistently maintained within the 320–380 HBW range. Downstream manufacturers can ensure consistent elastic performance across batches without the need for complex process adjustments.
Excellent welding performance and low susceptibility to hot cracking
Compatible with TIG, MIG, and resistance welding processes used by major global manufacturers; welding thin-walled sheet springs requires neither preheating nor special adjustments to welding parameters, thereby lowering the technical threshold for processing in the customer's workshop.
Contact us to customize a cost-effective solution for your project
About Gnee Alloy
To ensure we can rapidly provide the most accurate factory-direct pricing and appropriate material grade recommendations, please include the following information in your inquiry email:
Required GH4145 product form: Round bar / Plate or sheet / Seamless pipe
Precise, complete dimensions: Diameter/thickness × width × length, plus surface finish requirements
Actual operating temperature and application environment (Aero-engine MRO / Gas turbine / Offshore oil & gas / Industrial furnace / Petrochemical)
Order type: Small-batch trial order / Annual bulk framework contract / Urgent MRO replenishment
1.Destination country and special certification requirements (3.1 Material Certificate / 3.2 Third-party inspection / Dual-use item export license / AMS aerospace certification)
2.Complimentary laboratory samples available for high-temperature relaxation and hardness testing (buyer covers international shipping costs only)
3.Upon submission of your inquiry, we will immediately send the complete GH4145 technical data sheet and a comparison report between GH4145 and Inconel X-750
4.Comprehensive support for custom fabrication based on drawings, laser cutting, special tolerances, and customized surface finishes
Our Factory Core Strengths as Professional GH4145 Supplier
With 18 years of experience as an integrated manufacturer and exporter of superalloys, our facility fully meets the rigorous supplier audit standards required by global procurement departments in the aerospace, offshore oil, and power generation sectors:
Fully Integrated, Closed-Loop Production Line: We operate independent workshops for vacuum melting, hot/cold rolling, heat treatment, precision machining, and testing. By eliminating the need to outsource intermediate processes, we maintain complete control over product quality and delivery schedules.
Comprehensive Professional Testing Laboratory: Equipped with a full suite of instruments-including spectrometers, high-temperature tensile testers, stress relaxation testers, ultrasonic and eddy current flaw detectors, and metallographic microscopes-we ensure 100% inspection of every batch prior to shipment.
Robust International Certification System: We hold ISO9001, ISO14001, and ISO45001 certifications, alongside third-party validations from SGS and TÜV Rheinland. Our documentation fully complies with global supplier audit standards, and we provide certification support aligned with AMS aerospace specifications.
Experienced Cross-Border Team (18 Years of GH4145 Export Expertise): Our team is proficient in handling export licenses for dual-use items, customs clearance, airworthy packaging, and end-to-end logistics tracking. We are also well-versed in the specific export documentation requirements for offshore oil projects in the Middle East.
Flexible Order Support System: No strict Minimum Order Quantity (MOQ) limits for small-batch trial orders; exclusive, stable contract pricing for large-volume annual framework agreements; and complimentary laboratory samples provided for customer performance testing.
Gnee Alloy GH4145 certificate
FAQ
Q1: What core advantage makes GH4145 different from GH2132 & GH4169? What is its long-term stable service temperature?
A: GH4145 is precipitation hardening nickel alloy equivalent to Inconel X-750, its exclusive core competitiveness is outstanding anti-stress relaxation performance at 540℃, far superior to GH2132; its comprehensive corrosion resistance for offshore H₂S environment is better than GH4169, but high-temperature creep strength above 800℃ is inferior to GH4169, not recommended for heavy rotating turbine blades above 800℃.
Long-term continuous safe bearing service temperature: ≤800℃
Core anti-relaxation optimal temperature zone: ≤540℃ It requires three-stage solution + dual aging heat treatment to reach full elastic and tensile strength, cannot be used as finished load-bearing parts only in solution state.
Q2: What three core product forms of GH4145 can you supply? What standard sizes are in permanent stock?
A: We fully produce three mainstream finished forms for global export, all standard inventory sizes support fast MRO emergency delivery:
GH4145 Round Bar & Forged Billet Diameter Φ10mm~Φ500mm; random length 2000~5000mm, customizable fixed cutting length; surface options: black forged, peeled bright, centerless ground polished (h8/h9 tight tolerance)
GH4145 Cold Rolled Sheet & Hot Rolled Plate Thickness: Thin sheet 0.05~3.0mm; thick plate 4.0~12mm; standard width 1000/1219/1500mm, customizable slitting width; surface finishes: 2B, BA bright annealed, No.1 hot rolled pickled, sand blasted
GH4145 Seamless Cold Drawn Tube Outer diameter Φ10~320mm; wall thickness 0.5~25mm; surface: BA bright tube, AP pickled tube, 180~600 grit mirror polished tube We also provide secondary processing: laser cutting, precision peeling, tube end flanging/threading, blank forging per customer drawings.
Q3: Two melting grades of GH4145, what's the difference for export audit & total cost?
A: We offer two melting processes to match different customer budget and industry audit standards:
Industrial General Grade (Single VIM Vacuum Induction Melting) Suitable for ordinary industrial furnace, general petrochemical non-critical fastener parts, cost-saving option, basic UT ultrasonic inspection provided with shipment.
Aviation & Offshore Premium Grade (VIM+VAR Double Vacuum Melting) Mandatory for aero engine springs, offshore downhole sealing core components. Eliminates element segregation, micro-shrinkage and harmful S/P impurities locked far below standard limits, attached with 100% UT+MT full NDT Class A internal flaw report, meets global aviation & oil operator supplier audit requirements, complete dual-use material export documents & AMS matching certification available for Kazakhstan, CIS, EU aerospace clients.
Q4: Which surface finish of GH4145 sheet is the most popular for global bulk export orders?
A: The 2B cold rolled annealed & pickled matte finish accounts for 76% of our overseas bulk GH4145 sheet orders. It balances procurement cost, moderate stamping ductility and excellent welding performance, the primary choice for mass production of aviation sealing thin sheets and medium-temperature furnace lining plates by global OEM manufacturers. Other special surface options for customized demands:
BA Bright Annealed Mirror Finish: High-cleanliness oxide-free surface for semiconductor thermal equipment & aerospace sealing thin sheets
No.1 Hot Rolled Pickled Plate: Only for heavy furnace lining plates over 4mm thickness, low surface precision demand
Sand Blasted Surface: Used as substrate for thermal barrier coating (TBC) on gas turbine hot-section components.
Q5: What impurity content limits do you strictly control for GH4145? Why this matters for customer spring mass production?
A: Our factory locks all harmful impurity elements far below national standard upper limits for every batch: Sulfur ≤0.008%, Phosphorus ≤0.012%, Fe ≤8.0%, Ti/Nb trace elements precisely calibrated. From 20 years of procurement on-site data verification: Many low-cost small factories raise Fe, S, P content and skip precise Ti/Nb addition to cut raw material cost, which directly leads to spring cold coiling cracking, inconsistent aging hardness and severe stress relaxation failure under 540℃ sustained high temperature. Every GH4145 shipment attaches full spectral composition test report for your factory audit.
Hot Tags: GH4145 (Inconel X-750 / UNS N07750) Precipitation Hardening Nickel Superalloy, China GH4145 (Inconel X-750 / UNS N07750) Precipitation Hardening Nickel Superalloy suppliers, durable alloy, alloy company, defect free alloy, toughness alloy, non magnetic alloy, gh4169 alloy nickel based superalloy
Previous
No InformationYou Might Also Like
Send Inquiry