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GB/T 1299 Cr12 vs GOST 5950 4H5MFS

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

GB/T 1299 Cr12 (GB/T 1299-2014) and GOST 5950 4H5MFS (GOST 5950-2000) are both steel grades. Both fall under the Tool & Die Steels category. GB/T 1299 Cr12 is typically used for cold forming dies, blanking dies, while GOST 5950 4H5MFS is commonly used for used for die casting dies, forging tools, extrusion dies, punches, and hot shear blades.. GB/T 1299 Cr12 is defined under Guobiao Standards (GB/T) (China).

As per chemical composition, GB/T 1299 Cr12 vs GOST 5950 4H5MFS is a 64.9% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With GB/T 1299 Cr12:
GOST 5950 4H5MFS1 AISI 52100 DIN EN ISO 4957 1.2344 EN ISO 683-17 100Cr6 EN ISO 4957 1.2316 GB/T 1299 4Cr5MoSiV1 GB/T 1299 3Cr2W8V GB/T 1299 4Cr5MoSiV DIN EN ISO 4957 1.2379 GOST 5950 3H2W8F IS 1570 (Part 6) 103T3 IS 1570 (Part 6) 118T3
Match Breakdown
CHEMISTRY MATCH
64.9%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property GB/T 1299 Cr12 GOST 5950 4H5MFS
Standard GB/T 1299-2014 GOST 5950-2000
Category Tool & Die Steels Tool & Die Steels
C (%) 2.00–2.30 0.35-0.45
Si (%) ≤0.40 0.8-1.2
Mn (%) ≤0.40 Not specified
Cr (%) 11.50–13.00 4.5-5.5
Mo (%) Not specified 1.2-1.6
V (%) Not specified 0.3-0.6
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 1299 Cr12 GOST 5950 4H5MFS
Hardness HRC (hardened) 60–64 Not specified
Hardness HB (annealed) ≤255 Not specified
Tensile Strength Not specified 1350-1650 MPa
Yield Strength Not specified 1150 MPa min
Elongation Not specified 9% min
Hardness Not specified 44-50 HRC
Typical Applications
GB/T 1299 Cr12
Cold forming dies, blanking dies
GOST 5950 4H5MFS
Used for die casting dies, forging tools, extrusion dies, punches, and hot shear blades.
Key Differences
Can GB/T 1299 Cr12 Be Substituted With GOST 5950 4H5MFS?
GB/T 1299 Cr12 and GOST 5950 4H5MFS 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
GB/T 1299 Cr12
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 3000–3400 mm (118.11–133.86 in)
GOST 5950 4H5MFS
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
GB/T 1299 Cr12
2 active listings and RFQs →
GOST 5950 4H5MFS
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 1299 Cr12 and GOST 5950 4H5MFS?
GB/T 1299 Cr12 specifies Mn which is not specified for GOST 5950 4H5MFS. GOST 5950 4H5MFS specifies Mo, V which are not specified for GB/T 1299 Cr12.
Can GB/T 1299 Cr12 be substituted with GOST 5950 4H5MFS?
GB/T 1299 Cr12 and GOST 5950 4H5MFS 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.