Related Material — 69.2% match
based on chemical composition and mechanical property overlap.
GB/T 699 20Mn (GB/T 699:2015) and GOST 1050 20 (GOST 1050-2013) are both steel grades.
Both fall under the Carbon Steel category.
GB/T 699 20Mn is typically used for hot-rolled or forged quality carbon structural steel bars up to 250 mm, while GOST 1050 20 is commonly used for shafts, bolts, gears, pins, forgings, machined components.
GB/T 699 20Mn is defined under Guobiao Standards (GB/T) (China).
As per chemical composition, GB/T 699 20Mn vs GOST 1050 20 is a 91.3% match.
As per mechanical properties, the match is 25%.
Combined, this makes them a related material overall at 69.2%.
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property
GB/T 699 20Mn
GOST 1050 20
Tensile Strength
>=450 MPa
410-550 MPa
Yield Strength
>=275 MPa
>=245 MPa
Elongation
>=24%
>=24%
Hardness
<=197 HB (as delivered, not heat treated)
<=156 HB
Condition
Normalized 25 mm sample blank, bars up to 80 mm; hardness for delivery state
Not specified
Typical Applications
GB/T 699 20Mn
Hot-rolled or forged quality carbon structural steel bars up to 250 mm
Can GB/T 699 20Mn Be Substituted With GOST 1050 20?
GB/T 699 20Mn and GOST 1050 20 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 GB/T 699 20Mn and GOST 1050 20?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can GB/T 699 20Mn be substituted with GOST 1050 20?
GB/T 699 20Mn and GOST 1050 20 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.