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GB/T 1299 Cr12Mo1V1 vs GOST 5950 4H5MFS1

Minimal Match — 43.2% match based on chemical composition and mechanical property overlap.

GB/T 1299 Cr12Mo1V1 (GB/T 1299-2014) and GOST 5950 4H5MFS1 (GOST 5950-2000) are both steel grades. Both fall under the Tool & Die Steels category. GB/T 1299 Cr12Mo1V1 is typically used for precision blanking dies, thread rolling dies, cold forming, while GOST 5950 4H5MFS1 is commonly used for used for forging dies, pressure casting dies, hot punches, extrusion tooling, and die inserts.. GB/T 1299 Cr12Mo1V1 is defined under Guobiao Standards (GB/T) (China).

As per chemical composition, GB/T 1299 Cr12Mo1V1 vs GOST 5950 4H5MFS1 is a 64.9% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 43.2%.

Frequently Compared With GB/T 1299 Cr12Mo1V1:
GOST 5950 3H2W8F EN ISO 4957 1.2316 DIN EN ISO 4957 1.2379 GB/T 1299 4Cr5MoSiV1 GB/T 1299 3Cr2W8V EN ISO 683-17 100Cr6 DIN EN ISO 4957 1.2344 GB/T 1299 4Cr5MoSiV GOST 5950 4H5MFS AISI 52100 IS 1570 (Part 6) 103T3
Other Tool & Die Steels Grades to Compare With GB/T 1299 Cr12Mo1V1:
IS 3748 103T3
Match Breakdown
CHEMISTRY MATCH
64.9%
MECHANICAL MATCH
0%
OVERALL
43.2%
Specifications
Property GB/T 1299 Cr12Mo1V1 GOST 5950 4H5MFS1
Standard GB/T 1299-2014 GOST 5950-2000
Category Tool & Die Steels Tool & Die Steels
C (%) 1.45–1.70 0.35-0.45
Si (%) ≤0.40 0.8-1.2
Mn (%) ≤0.40 Not specified
Cr (%) 11.00–13.00 4.5-5.5
Mo (%) 0.40–0.60 1.2-1.6
V (%) 0.15–0.30 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 Cr12Mo1V1 GOST 5950 4H5MFS1
Hardness HRC (hardened) 58–62 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 Cr12Mo1V1
Precision blanking dies, thread rolling dies, cold forming
GOST 5950 4H5MFS1
Used for forging dies, pressure casting dies, hot punches, extrusion tooling, and die inserts.
Key Differences
Can GB/T 1299 Cr12Mo1V1 Be Substituted With GOST 5950 4H5MFS1?
GB/T 1299 Cr12Mo1V1 and GOST 5950 4H5MFS1 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 Cr12Mo1V1
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 3100–3200 mm (122.05–125.98 in)
GOST 5950 4H5MFS1
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 3000–3100 mm (118.11–122.05 in)
On M-EX Right Now
GB/T 1299 Cr12Mo1V1
2 active listings and RFQs →
GOST 5950 4H5MFS1
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 1299 Cr12Mo1V1 and GOST 5950 4H5MFS1?
GB/T 1299 Cr12Mo1V1 specifies Mn which is not specified for GOST 5950 4H5MFS1.
Can GB/T 1299 Cr12Mo1V1 be substituted with GOST 5950 4H5MFS1?
GB/T 1299 Cr12Mo1V1 and GOST 5950 4H5MFS1 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.