Strong Match — 100% match
based on chemical composition and mechanical property overlap.
ASTM A105 (ASTM A105) and ASME SA105 (ASME BPVC.II.A-2025 SA-105/SA-105M) are both steel grades.
Both fall under the Carbon Steel category.
ASTM A105 is typically used for flanges, fittings, valves, pressure piping components, forged pressure vessel parts, while ASME SA105 is commonly used for pressure vessel flanges, boiler fittings, valves, piping components requiring asme certification.
ASTM A105 is defined under ASTM International (United States).
As per chemical composition, ASTM A105 vs ASME SA105 is a 100% match.
As per mechanical properties, the match is 100%.
Combined, this makes them a strong match overall at 100%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
ASTM A105
ASME SA105
Tensile Strength
485 MPa min
485 MPa min
Yield Strength
250 MPa min
250 MPa min
Elongation
≥22%
≥22%
Hardness
≤197 HB
≤197 HB
Typical Applications
ASTM A105
Flanges, fittings, valves, pressure piping components, forged pressure vessel parts
ASTM A105 and ASME SA105 overlap closely enough on chemistry and mechanical properties that ASME SA105 is often considered as a substitute for ASTM A105 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
What is the difference between ASTM A105 and ASME SA105?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A105 be substituted with ASME SA105?
ASTM A105 and ASME SA105 overlap closely enough on chemistry and mechanical properties that ASME SA105 is often considered as a substitute for ASTM A105 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.