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