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GB/T 1299 3Cr2W8V vs GOST 5950 4H5MFS

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

GB/T 1299 3Cr2W8V (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 3Cr2W8V is typically used for used for hot forging dies, extrusion dies, die-casting molds, hot punches, and hot shear blades., 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 3Cr2W8V is defined under Guobiao Standards (GB/T) (China).

As per chemical composition, GB/T 1299 3Cr2W8V vs GOST 5950 4H5MFS is a 54.6% match. As per mechanical properties, the match is 6.6%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With GB/T 1299 3Cr2W8V:
GOST 5950 3H2W8F GB/T 1299 4Cr5MoSiV EN ISO 683-17 100Cr6 AISI 52100 IS 1570 (Part 6) 133T3 DIN EN ISO 4957 1.2344 IS 3748 103T3 IS 3748 50T8 IS 3748 70T3 IS 3748 80T3 IS 3748 55T8 IS 3748 133T3
Match Breakdown
CHEMISTRY MATCH
54.6%
MECHANICAL MATCH
6.6%
OVERALL
35%
Specifications
Property GB/T 1299 3Cr2W8V GOST 5950 4H5MFS
Standard GB/T 1299-2014 GOST 5950-2000
Category Tool & Die Steels Tool & Die Steels
C (%) 0.30-0.40 0.35-0.45
Si (%) 0.20-0.40 0.8-1.2
Mn (%) 0.20-0.50 Not specified
Cr (%) 2.20-2.70 4.5-5.5
W (%) 7.50-9.00 Not specified
V (%) 0.20-0.50 0.3-0.6
P (%) 0.030 max Not specified
S (%) 0.030 max Not specified
Mo (%) Not specified 1.2-1.6
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 3Cr2W8V GOST 5950 4H5MFS
Tensile Strength 1180-1380 MPa 1350-1650 MPa
Yield Strength 980-1180 MPa 1150 MPa min
Elongation 10-14% 9% min
Hardness 48-54 HRC 44-50 HRC
Typical Applications
GB/T 1299 3Cr2W8V
Used for hot forging dies, extrusion dies, die-casting molds, hot punches, and hot shear blades.
GOST 5950 4H5MFS
Used for die casting dies, forging tools, extrusion dies, punches, and hot shear blades.
Key Differences
Can GB/T 1299 3Cr2W8V Be Substituted With GOST 5950 4H5MFS?
GB/T 1299 3Cr2W8V 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 3Cr2W8V
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2800–2900 mm (110.24–114.17 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 3Cr2W8V
2 active listings and RFQs →
GOST 5950 4H5MFS
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 1299 3Cr2W8V and GOST 5950 4H5MFS?
GB/T 1299 3Cr2W8V specifies Mn, W, P, S which are not specified for GOST 5950 4H5MFS. GOST 5950 4H5MFS specifies Mo which is not specified for GB/T 1299 3Cr2W8V.
Can GB/T 1299 3Cr2W8V be substituted with GOST 5950 4H5MFS?
GB/T 1299 3Cr2W8V 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.