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ASTM A240/A240M S34809 vs ASTM A240/A240M S34709

Strong Match — 93.7% match based on chemical composition and mechanical property overlap.

ASTM A240/A240M S34809 (ASTM A240/A240M:2025) and ASTM A240/A240M S34709 (ASTM A240/A240M:2025) are both steel grades. Both fall under the Stainless Steel category. ASTM A240/A240M S34809 is typically used for pressure vessels and general applications (plate, sheet and strip), while ASTM A240/A240M S34709 is commonly used for pressure vessels and general applications (plate, sheet and strip). ASTM A240/A240M S34809 is defined under ASTM International, originating from United States, while ASTM A240/A240M S34709 is defined under ASTM International, originating from United States.

As per chemical composition, ASTM A240/A240M S34809 vs ASTM A240/A240M S34709 is a 90.6% match. As per mechanical properties, the match is 100%. Combined, this makes them a strong match overall at 93.7%.

Frequently Compared With ASTM A240/A240M S34809:
GB/T 3280 06Cr19Ni10 GOST 5632 06Kh23N28 EN 10088-1 1.4006 EN 10088-1 1.4301 EN 10088-1 1.4401 IS 1570 (Part 7) 11Cr17Ni13W3TiH IS 1570 (Part 7) 12Cr12Ni2Mo IS 1570 (Part 7) 12Cr13H GOST 5632 08X18H10 EN 10088-1 1.4845 IS 1570 (Part 7) 12Cr12MoH ASTM A959 .-
Match Breakdown
CHEMISTRY MATCH
90.6%
MECHANICAL MATCH
100%
OVERALL
93.7%
Specifications
Property ASTM A240/A240M S34809 ASTM A240/A240M S34709
Standard ASTM A240/A240M:2025 ASTM A240/A240M:2025
Category Stainless Steel Stainless Steel
C (%) 0.04-0.10 0.04-0.10
Mn (%) <=2.00 <=2.00
P (%) <=0.045 <=0.045
S (%) <=0.030 <=0.030
Si (%) <=0.75 <=0.75
Cr (%) 17.0-19.0 17.0-19.0
Ni (%) 9.0-13.0 9.0-13.0
Ta (%) <=0.10 Not specified
Co (%) <=0.20 Not specified
Nb (%) Not specified <=1.00
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 S34809 ASTM A240/A240M S34709
Tensile Strength >=515 MPa >=515 MPa
Yield Strength >=205 MPa >=205 MPa
Elongation >=40% >=40%
Hardness <=201 HB <=201 HB
Condition Plate, sheet and strip; yield by 0.2 percent offset Plate, sheet and strip; yield by 0.2 percent offset
Typical Applications
ASTM A240/A240M S34809
Pressure vessels and general applications (plate, sheet and strip)
ASTM A240/A240M S34709
Pressure vessels and general applications (plate, sheet and strip)
Key Differences
Can ASTM A240/A240M S34809 Be Substituted With ASTM A240/A240M S34709?
ASTM A240/A240M S34809 and ASTM A240/A240M S34709 overlap closely enough on chemistry and mechanical properties that ASTM A240/A240M S34709 is often considered as a substitute for ASTM A240/A240M S34809 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
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ASTM A240/A240M S34809
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ASTM A240/A240M S34709
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Frequently Asked Questions
What is the difference between ASTM A240/A240M S34809 and ASTM A240/A240M S34709?
ASTM A240/A240M S34809 specifies Ta, Co which are not specified for ASTM A240/A240M S34709. ASTM A240/A240M S34709 specifies Nb which is not specified for ASTM A240/A240M S34809.
Can ASTM A240/A240M S34809 be substituted with ASTM A240/A240M S34709?
ASTM A240/A240M S34809 and ASTM A240/A240M S34709 overlap closely enough on chemistry and mechanical properties that ASTM A240/A240M S34709 is often considered as a substitute for ASTM A240/A240M S34809 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.