ASTM A572/A572M Grade 55 vs ASTM A1008 SS Grade 50
Related Material — 63.8% match
based on chemical composition and mechanical property overlap.
ASTM A572/A572M Grade 55 (ASTM A572/A572M:2018) and ASTM A1008 SS Grade 50 (ASTM A1008) are both steel grades.
Both fall under the Structural Steel category.
ASTM A572/A572M Grade 55 is typically used for riveted, bolted or welded structures, while ASTM A1008 SS Grade 50 is commonly used for cold-rolled high-strength structural steel sheet; automotive structural components, cold-formed parts requiring moderate strength.
ASTM A572/A572M Grade 55 is defined under ASTM International, originating from United States, while ASTM A1008 SS Grade 50 is defined under ASTM International, originating from United States.
As per chemical composition, ASTM A572/A572M Grade 55 vs ASTM A1008 SS Grade 50 is a 95.7% match.
As per mechanical properties, the match is 0%.
Combined, this makes them a related material overall at 63.8%.
Frequently Compared With ASTM A572/A572M Grade 55:
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
ASTM A572/A572M Grade 55
ASTM A1008 SS Grade 50
Tensile Strength
>=485 MPa
380 MPa min
Yield Strength
>=380 MPa
340 MPa min
Elongation
>=17%
14% min
Condition
Tension test per Table 4; one set of minimum values for all product thicknesses; Elongation is in 200 mm gauge length, 50 mm values in the tensile block
Can ASTM A572/A572M Grade 55 Be Substituted With ASTM A1008 SS Grade 50?
ASTM A572/A572M Grade 55 and ASTM A1008 SS Grade 50 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.
What is the difference between ASTM A572/A572M Grade 55 and ASTM A1008 SS Grade 50?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can ASTM A572/A572M Grade 55 be substituted with ASTM A1008 SS Grade 50?
ASTM A572/A572M Grade 55 and ASTM A1008 SS Grade 50 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.