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GOST 1435 U10 vs GB/T 1299 4Cr5MoSiV

Minimal Match — 35% match based on chemical composition and mechanical property overlap.

GOST 1435 U10 (GOST 1435-1999) and GB/T 1299 4Cr5MoSiV (GB/T 1299-2014) are both steel grades. Both fall under the Tool & Die Steels category. GOST 1435 U10 is typically used for used for chisels, punches, files, woodworking tools, and knives., while GB/T 1299 4Cr5MoSiV is commonly used for die casting dies, extrusion tooling. GB/T 1299 4Cr5MoSiV is defined under Guobiao Standards (GB/T) (China).

As per chemical composition, GOST 1435 U10 vs GB/T 1299 4Cr5MoSiV is a 59.3% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With GOST 1435 U10:
DIN EN ISO 4957 1.2379 GB/T 1299 4Cr5MoSiV1 DIN EN ISO 4957 1.2344 EN ISO 4957 1.2316 EN ISO 683-17 100Cr6 AISI 52100 GOST 5950 3H2W8F GOST 5950 4H5MFS GOST 5950 4H5MFS1 IS 1570 (Part 6) 103T3 GB/T 1299 3Cr2W8V IS 1570 (Part 6) 133T3
Match Breakdown
CHEMISTRY MATCH
59.3%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property GOST 1435 U10 GB/T 1299 4Cr5MoSiV
Standard GOST 1435-1999 GB/T 1299-2014
Category Tool & Die Steels Tool & Die Steels
C (%) 0.95-1.04 0.32–0.45
Mn (%) 0.17-0.33 0.20–0.50
Si (%) 0.17-0.33 0.80–1.20
S (%) 0.028 max Not specified
P (%) 0.03 max Not specified
Cr (%) Not specified 4.75–5.50
Mo (%) Not specified 1.10–1.60
V (%) Not specified 0.30–0.60
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property GOST 1435 U10 GB/T 1299 4Cr5MoSiV
Tensile Strength 750-900 MPa Not specified
Yield Strength 450 MPa min Not specified
Elongation 10% min Not specified
Hardness 60-64 HRC Not specified
Hardness HRC (hardened) Not specified 40–54
Hardness HB (annealed) Not specified ≤235
Typical Applications
GOST 1435 U10
Used for chisels, punches, files, woodworking tools, and knives.
GB/T 1299 4Cr5MoSiV
Die casting dies, extrusion tooling
Key Differences
Can GOST 1435 U10 Be Substituted With GB/T 1299 4Cr5MoSiV?
GOST 1435 U10 and GB/T 1299 4Cr5MoSiV 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.
Forms & Sizes Available on M-EX
GOST 1435 U10
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2800–3100 mm (110.24–122.05 in)
GB/T 1299 4Cr5MoSiV
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2500–2700 mm (98.43–106.3 in)
On M-EX Right Now
GOST 1435 U10
2 active listings and RFQs →
GB/T 1299 4Cr5MoSiV
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GOST 1435 U10 and GB/T 1299 4Cr5MoSiV?
GOST 1435 U10 specifies S, P which are not specified for GB/T 1299 4Cr5MoSiV. GB/T 1299 4Cr5MoSiV specifies Cr, Mo, V which are not specified for GOST 1435 U10.
Can GOST 1435 U10 be substituted with GB/T 1299 4Cr5MoSiV?
GOST 1435 U10 and GB/T 1299 4Cr5MoSiV 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.