Close Alternative — 82.1% match
based on chemical composition and mechanical property overlap.
GB/T 699 45 (GB/T 699:2015) and GOST 1050 45 (GOST 1050-2013) are both steel grades.
Both fall under the Carbon Steel category.
GB/T 699 45 is typically used for used for shafts, gears, bolts, connecting rods, axles, and hydraulic components., while GOST 1050 45 is commonly used for gears, shafts, spindles, bolts, axles, forged components.
GB/T 699 45 is defined under Guobiao Standards (GB/T) (China).
As per chemical composition, GB/T 699 45 vs GOST 1050 45 is a 98.2% match.
As per mechanical properties, the match is 50%.
Combined, this makes them a close alternative overall at 82.1%.
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 45
GOST 1050 45
Tensile Strength
>=600 MPa
600-750 MPa
Yield Strength
>=355 MPa
>=355 MPa
Elongation
>=16%
>=16%
Hardness
<=229 HB (as delivered, not heat treated)
170-229 HB
Condition
Normalized 25 mm sample blank, bars up to 80 mm; hardness for delivery state
Not specified
Typical Applications
GB/T 699 45
Used for shafts, gears, bolts, connecting rods, axles, and hydraulic components.
GB/T 699 45 and GOST 1050 45 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 45 and GOST 1050 45?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can GB/T 699 45 be substituted with GOST 1050 45?
GB/T 699 45 and GOST 1050 45 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.