Inconel 600

Inconel 600 ASTM Product Specifications

Specification	Title
B163	Seamless Nickel and Nickel Alloy Condenser and Heat Exchanger Tubes
B166	Nickel Chromium Iron Alloys (UNS N06600, N06601, N06690, N06025 & N06045) and Nickel Chromium Cobalt Molybdenum Alloy (UNS N06617) Rod, Bar and Wire
B167	Nickel Chromium Iron Alloys (UNS N06600, N06601, N06690, N06025 & N06045) Seamless Pipe & Tube
B168	Nickel Chromium Iron Alloys (UNS N06600, N06601, N06690, N06025 & N06045) and Nickel Chromium Cobalt Molybdenum Alloy (UNS N06617) Plate, Sheet & Strip
B366	Factory Made Wrought Nickel and Nickel Alloy Fittings
B516	Welded Nickel Chromium Iron Alloy (UNS N06600), UNS N06025, and UNS N06045 Tubes
B517	Welded Nickel Chromium Iron Alloy (UNS N06600), UNS N06025, and UNS N06045 Pipe
B564	Nickel Alloy Forgings
B751	General Requirements for Nickel and Nickel Alloy Welded Tube
B775	General Requirements for Nickel and Nickel Alloy Welded Pipe

 

 

Inconel 600 Chemical Composition

Chemical Elements	ASTM Standard Range (wt%)	Export Batch Internal Control (wt%)	Engineering Performance Explanation
Ni (Nickel)	≥72.0	72.5~75.0	Core anti-SCC matrix, fundamental resistance to chloride stress corrosion
Cr (Chromium)	14.0~17.0	14.8~16.5	Form dense oxide film to resist high-temperature oxidation and weak acid corrosion
Fe (Iron)	6.0~10.0	7.0~9.0	Balance alloy toughness, improve processing and welding adaptability
C (Carbon)	≤0.15	≤0.07	Ultra-low carbon prevents intergranular corrosion after welding
Mn / Si	Mn≤1.0, Si≤0.5	Mn≤0.8, Si≤0.4	Control residual elements to stabilize surface and processing performance
S / P	≤0.015	≤0.008	Ultra-low impurities, avoid welding cracks and local corrosion points

 

Inconel 600 Mechanical Properties

Product Form	Condition	Tensile (ksi)	.2% Yield (ksi)	Elongation (%)	Hardness (HRB)
Rod & Bar	Cold-Drawn	80-100	25-50	35-55	65-85
Rod & Bar	Hot-Finished	80-100	30-50	35-55	65-85
Tube & Pipe	Hot-Finished	75-100	30-50	35-55	–
Tube & Pipe	Hot-Finished	80-100	25-50	35-55	88 Max
Plate	Hot-Rolled	80-105	30-50	35-55	65-85
Sheet	Cold-Drawn	80-100	30-45	35-55	88 Max

Click to download the Inconel 625 alloy PDF datasheet

 

 

High-Temperature Mechanical Properties

Temp (°C)	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Strength Retention (%)
20 (RT)	≥ 550	≥ 205	≥ 30	100%
300	~520	~190	~32	95%
400	~500	~180	~34	91%
500	~480	~170	~36	87%
600	~450	~160	~38	82%
650	~420	~150	~40	76%
700	~380	~140	~42	69%
750	~350	~130	~44	64%
800	~320	~120	~46	58%
900	~250	~100	~50	45%

High-Temperature Strength Retention

Temperature	Strength Retention	Design Recommendation
500°C	~87%	Excellent for long-term service
600°C	~82%	Good for load-bearing
650°C	~76%	Reduce design stress
700°C	~69%	Short-term use
800°C	~58%	Limited exposure

 

Corrosion Resistance

Environment	Resistance Level	Notes
Oxidizing Acids (HNO₃)	Good to Excellent	-
Reducing Acids (H₂SO₄, HCl)	Poor	Not recommended
Chloride Pitting	Moderate	-
Chloride Stress Corrosion Cracking	Moderate	-
Seawater	Limited	-
High-Temperature Oxidation (to 1100°C)	Excellent	Primary advantage
Carburizing Atmospheres	Good	-
Alkaline Solutions	Excellent	-

Corrosion Resistance Rating (1-5, 5 = best)

Environment	Inconel 600
Nitric Acid	4
Sulfuric Acid	2
Hydrochloric Acid	1
Seawater	2
High-Temp Oxidation (1100°C)	5
Alkaline Solutions	5

 

 

Bar Products

Diameter (mm)	Length (mm)	Tolerance	Surface
6 – 25	2000 – 6000	h6 – h8	Ground / Bright
25 – 50	2000 – 6000	h6 – h8	Ground / Bright
50 – 100	2000 – 4000	h7 – h9	Black / Rough Turned
100 – 200	1000 – 3000	h8 – h10	Black / Rough Turned

Tube Products

OD (mm)	Wall Thickness (mm)	Tolerance	Surface
6 – 30	0.5 – 3.0	±0.05 – ±0.10 mm	BA / AP
30 – 50	1.0 – 5.0	±0.10 – ±0.15 mm	BA / AP
50 – 100	2.0 – 8.0	±0.15 – ±0.30 mm	BA / AP

Plate Products

Thickness (mm)	Width (mm)	Length (mm)	Tolerance
0.5 – 4.0	500 – 1200	1000 – 3000	±5% – ±10%
4.0 – 10.0	500 – 1500	1000 – 4000	±5% – ±10%
10.0 – 25.0	500 – 1500	1000 – 4000	±5% – ±10%

Contact us to customize Inconel 625 products to your project's dimensions

 

 

Industry	Application	Operating Temperature
Heat Treatment	Furnace muffles, radiant tubes, retorts, baskets	800 – 1100°C
Chemical Processing	Nitric acid equipment, heat exchangers	400 – 700°C
Aerospace	Engine components, seals	500 – 800°C
Nuclear	Reactor components	300 – 600°C
Food Processing	Heating element sheaths	400 – 700°C
Electrical / Electronics	Cathode ray tube components	300 – 500°C

 

 

Test Method	Requirement	Standard	Acceptance Criteria
Ultrasonic Testing (UT)	As specified (100% for aviation/nuclear)	ASTM E2375	No defects exceeding 0.8mm
Eddy Current Testing (ET)	As specified (tubes)	ASTM E426	No relevant indications
Hydrostatic Test	100% (tubes/pressure parts)	ASTM B829	No leakage
Liquid Penetrant Inspection (LPI)	As specified	ASTM E1417	No relevant indications
Visual Inspection	100%	-	No surface defects

Click to view actual photos of our Inconel 625 products

 

 

Feature/Property	Inconel 600	Inconel 625	Inconel 718
Chemical Composition	High nickel, chromium, iron, with high‑temperature strength and oxidation resistance.	High nickel, chromium, molybdenum, niobium, with high corrosion resistance and strength.	High nickel, chromium, niobium, with high‑temperature strength and corrosion resistance.
Mechanical Properties	Good tensile and yield strength, excellent fatigue and creep resistance.	Higher strength than Inconel 600, excellent resistance to chloride stress‑corrosion cracking.	Higher tensile and yield strength than Inconel® 600, excellent mechanical properties at high temperatures.
Applications	Aerospace engine components, chemical processing equipment, heat exchangers.	Marine and offshore applications, aerospace parts requiring high corrosion resistance.	Gas turbine components, rocket engines, nuclear reactors requiring high‑temperature strength and oxidation resistance.

Contact our experts to recommend the right alloy for your project

 

 Gnee Alloy Inconel 600 certificate

 

Q1: What is the essential difference between Inconel 600 and 601/625? A: 600 focuses on chloride stress corrosion resistance and universal versatility; 601 is good at high-temperature cyclic oxidation and thermal fatigue; 625 is for ultra-high pressure and strong corrosion working conditions. 600 is the most cost-effective choice for conventional corrosive high-temperature projects.

 

Q2: Does Inconel 600 need post-weld heat treatment? A: No. The solid solution matrix has stable welding performance, no welding brittle failure risk, no need for secondary heat treatment, which is its core advantage for on-site construction.

 

Q3: Can Inconel 600 replace stainless steel for coastal equipment? A: Completely replaceable. It fundamentally solves the SCC cracking problem of stainless steel in chloride salt spray environment, with service life more than 5 times that of ordinary stainless steel.

 

Q4: What is the highest temperature resistance of Inconel 600? A: Continuous stable working temperature up to 1093℃, with excellent high-temperature oxidation resistance and structural stability.

 

Q5: What certifications can be provided for export? A: EN10204 3.1 factory certificate, 3.2 third-party inspection certificate, PMI spectrum report, mechanical performance test report, flaw detection report and full standard compliance documents.

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