Close Alternative — 74.3% match
based on chemical composition and mechanical property overlap.
GB/T 699 30Mn (GB/T 699:2015) and GOST 1050 35 (GOST 1050-2013) are both steel grades.
Both fall under the Carbon Steel category.
GB/T 699 30Mn is typically used for hot-rolled or forged quality carbon structural steel bars up to 250 mm, while GOST 1050 35 is commonly used for shafts, axles, connecting rods, forgings, gears, machine parts.
GB/T 699 30Mn is defined under Guobiao Standards (GB/T) (China).
As per chemical composition, GB/T 699 30Mn vs GOST 1050 35 is a 86.5% match.
As per mechanical properties, the match is 50%.
Combined, this makes them a close alternative overall at 74.3%.
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 30Mn
GOST 1050 35
Tensile Strength
>=540 MPa
530-680 MPa
Yield Strength
>=315 MPa
>=315 MPa
Elongation
>=20%
>=20%
Hardness
<=217 HB (as delivered, not heat treated)
163-207 HB
Condition
Normalized 25 mm sample blank, bars up to 80 mm; hardness for delivery state
Not specified
Typical Applications
GB/T 699 30Mn
Hot-rolled or forged quality carbon structural steel bars up to 250 mm
GOST 1050 35
shafts, axles, connecting rods, forgings, gears, machine parts
Can GB/T 699 30Mn Be Substituted With GOST 1050 35?
GB/T 699 30Mn and GOST 1050 35 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
What is the difference between GB/T 699 30Mn and GOST 1050 35?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can GB/T 699 30Mn be substituted with GOST 1050 35?
GB/T 699 30Mn and GOST 1050 35 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.