Post Stock Login Register

ASTM A240/A240M S21600 vs ASTM A959 N08020

Related Material — 69.9% match based on chemical composition and mechanical property overlap.

ASTM A240/A240M S21600 (ASTM A240/A240M:2025) and ASTM A959 N08020 (ASTM A959:2011) are both steel grades. Both fall under the Stainless Steel category. ASTM A240/A240M S21600 is typically used for pressure vessels and general applications (plate, sheet and strip), while ASTM A959 N08020 is commonly used for wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1). ASTM A240/A240M S21600 is defined under ASTM International, originating from United States, while ASTM A959 N08020 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A240/A240M S21600 vs ASTM A959 N08020 is a 70.3% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 69.9%.

Frequently Compared With ASTM A240/A240M S21600:
EN 10088-1 1.4845 GOST 5632 08X18H10 EN 10088-1 1.4401 IS 1570 (Part 7) 12Cr12MoH IS 1570 (Part 7) 12Cr12Ni2Mo GOST 5632 06Kh23N28 EN 10088-1 1.4006 EN 10088-1 1.4301 IS 1570 (Part 7) 12Cr12MoVH IS 1570 (Part 7) 12Cr13H ASTM A959 .- GB/T 3280 06Cr19Ni10
Match Breakdown
CHEMISTRY MATCH
70.3%
MECHANICAL MATCH
No shared data
OVERALL
69.9%
Specifications
Property ASTM A240/A240M S21600 ASTM A959 N08020
Standard ASTM A240/A240M:2025 ASTM A959:2011
Category Stainless Steel Stainless Steel
C (%) <=0.08 <=0.07
Mn (%) 7.50-9.00 <=2.00
P (%) <=0.045 <=0.045
S (%) <=0.030 <=0.035
Si (%) <=0.75 <=1.00
Cr (%) 17.5-22.0 19.0-21.0
Ni (%) 5.0-7.0 32.0-38.0
Mo (%) 2.00-3.00 2.00-3.00
N (%) 0.25-0.50 Not specified
Cu (%) Not specified 3.0-4.0
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property ASTM A240/A240M S21600 ASTM A959 N08020
Tensile Strength >=690 MPa Not specified
Yield Strength >=415 MPa Not specified
Elongation >=40% Not specified
Hardness <=241 HB Not specified
Condition Sheet and strip (first condition printed); yield by 0.2 percent offset Not specified
Typical Applications
ASTM A240/A240M S21600
Pressure vessels and general applications (plate, sheet and strip)
ASTM A959 N08020
Wrought stainless steel products; recommended composition limits for adoption by product standards (clause 1.1)
Key Differences
Can ASTM A240/A240M S21600 Be Substituted With ASTM A959 N08020?
ASTM A240/A240M S21600 and ASTM A959 N08020 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.
On M-EX Right Now
ASTM A240/A240M S21600
0 active listings and RFQs →
ASTM A959 N08020
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A240/A240M S21600 and ASTM A959 N08020?
ASTM A240/A240M S21600 specifies N which is not specified for ASTM A959 N08020. ASTM A959 N08020 specifies Cu which is not specified for ASTM A240/A240M S21600.
Can ASTM A240/A240M S21600 be substituted with ASTM A959 N08020?
ASTM A240/A240M S21600 and ASTM A959 N08020 share some compositional similarity but differ enough that substitution should not be assumed. Review the differences above carefully, and consult the applicable standard or a metallurgist before using one in place of the other.