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EN ISO 4957 X155CrVMo12-1 vs GOST 5950 4H5MFS

Minimal Match — 39.6% match based on chemical composition and mechanical property overlap.

EN ISO 4957 X155CrVMo12-1 (EN ISO 4957:2018) and GOST 5950 4H5MFS (GOST 5950-2000) are both steel grades. Both fall under the Tool & Die Steels category. EN ISO 4957 X155CrVMo12-1 is typically used for blanking dies, forming dies, thread rolling dies, gauges, while GOST 5950 4H5MFS is commonly used for used for die casting dies, forging tools, extrusion dies, punches, and hot shear blades.. EN ISO 4957 X155CrVMo12-1 is defined under European Standard (EN) (Europe).

As per chemical composition, EN ISO 4957 X155CrVMo12-1 vs GOST 5950 4H5MFS is a 59.5% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 39.6%.

Frequently Compared With EN ISO 4957 X155CrVMo12-1:
DIN EN ISO 4957 1.2344 EN ISO 683-17 100Cr6 GOST 5950 3H2W8F EN ISO 4957 1.2316 DIN EN ISO 4957 1.2379 GB/T 1299 3Cr2W8V GOST 5950 4H5MFS1 GB/T 1299 4Cr5MoSiV GB/T 1299 4Cr5MoSiV1 AISI 52100 IS 1570 (Part 6) 103T3
Other Tool & Die Steels Grades to Compare With EN ISO 4957 X155CrVMo12-1:
IS 3748 103T3
Match Breakdown
CHEMISTRY MATCH
59.5%
MECHANICAL MATCH
0%
OVERALL
39.6%
Specifications
Property EN ISO 4957 X155CrVMo12-1 GOST 5950 4H5MFS
Standard EN ISO 4957:2018 GOST 5950-2000
Category Tool & Die Steels Tool & Die Steels
C (%) 1.55–1.65 0.35-0.45
Mn (%) 0.20–0.50 Not specified
Cr (%) 11.50–12.50 4.5-5.5
Mo (%) 0.60–0.80 1.2-1.6
V (%) 0.70–1.00 0.3-0.6
Si (%) ≤0.40 0.8-1.2
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property EN ISO 4957 X155CrVMo12-1 GOST 5950 4H5MFS
Hardness HRC (hardened) 58–62 Not specified
Hardness HB (annealed) ≤255 Not specified
Wear Resistance Excellent 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
EN ISO 4957 X155CrVMo12-1
Blanking dies, forming dies, thread rolling dies, gauges
GOST 5950 4H5MFS
Used for die casting dies, forging tools, extrusion dies, punches, and hot shear blades.
Key Differences
Can EN ISO 4957 X155CrVMo12-1 Be Substituted With GOST 5950 4H5MFS?
EN ISO 4957 X155CrVMo12-1 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
EN ISO 4957 X155CrVMo12-1
Round Bar → (3 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2500–3200 mm (98.43–125.98 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
EN ISO 4957 X155CrVMo12-1
3 active listings and RFQs →
GOST 5950 4H5MFS
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN ISO 4957 X155CrVMo12-1 and GOST 5950 4H5MFS?
EN ISO 4957 X155CrVMo12-1 specifies Mn which is not specified for GOST 5950 4H5MFS.
Can EN ISO 4957 X155CrVMo12-1 be substituted with GOST 5950 4H5MFS?
EN ISO 4957 X155CrVMo12-1 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.