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EN ISO 4957 X40CrMoV5-1 vs GOST 5950 4H5MFS1

Related Material — 55.1% match based on chemical composition and mechanical property overlap.

EN ISO 4957 X40CrMoV5-1 (EN ISO 4957:2018) and GOST 5950 4H5MFS1 (GOST 5950-2000) are both steel grades. Both fall under the Tool & Die Steels category. EN ISO 4957 X40CrMoV5-1 is typically used for die casting dies, extrusion dies, forging dies, hot shear blades, while GOST 5950 4H5MFS1 is commonly used for used for forging dies, pressure casting dies, hot punches, extrusion tooling, and die inserts.. EN ISO 4957 X40CrMoV5-1 is defined under European Standard (EN) (Europe).

As per chemical composition, EN ISO 4957 X40CrMoV5-1 vs GOST 5950 4H5MFS1 is a 82.7% match. As per mechanical properties, the match is 0%. Combined, this makes them a related material overall at 55.1%.

Frequently Compared With EN ISO 4957 X40CrMoV5-1:
GB/T 1299 4Cr5MoSiV GB/T 1299 4Cr5MoSiV1 DIN EN ISO 4957 1.2344 EN ISO 683-17 100Cr6 EN ISO 4957 1.2316 DIN EN ISO 4957 1.2379 GOST 5950 3H2W8F GB/T 1299 3Cr2W8V GOST 5950 4H5MFS AISI 52100 IS 1570 (Part 6) 103T3 IS 3748 103T3
Match Breakdown
CHEMISTRY MATCH
82.7%
MECHANICAL MATCH
0%
OVERALL
55.1%
Specifications
Property EN ISO 4957 X40CrMoV5-1 GOST 5950 4H5MFS1
Standard EN ISO 4957:2018 GOST 5950-2000
Category Tool & Die Steels Tool & Die Steels
C (%) 0.35–0.42 0.35-0.45
Si (%) 0.80–1.20 0.8-1.2
Mn (%) 0.30–0.50 Not specified
Cr (%) 4.75–5.50 4.5-5.5
Mo (%) 1.20–1.50 1.2-1.6
V (%) 0.85–1.15 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 EN ISO 4957 X40CrMoV5-1 GOST 5950 4H5MFS1
Hardness HRC (hardened) 42–54 Not specified
Hardness HB (annealed) ≤235 Not specified
Hot Strength Excellent to 600°C 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 X40CrMoV5-1
Die casting dies, extrusion dies, forging dies, hot shear blades
GOST 5950 4H5MFS1
Used for forging dies, pressure casting dies, hot punches, extrusion tooling, and die inserts.
Key Differences
Can EN ISO 4957 X40CrMoV5-1 Be Substituted With GOST 5950 4H5MFS1?
EN ISO 4957 X40CrMoV5-1 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
EN ISO 4957 X40CrMoV5-1
Round Bar → (3 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2600–4800 mm (102.36–188.98 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
EN ISO 4957 X40CrMoV5-1
3 active listings and RFQs →
GOST 5950 4H5MFS1
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between EN ISO 4957 X40CrMoV5-1 and GOST 5950 4H5MFS1?
EN ISO 4957 X40CrMoV5-1 specifies Mn which is not specified for GOST 5950 4H5MFS1.
Can EN ISO 4957 X40CrMoV5-1 be substituted with GOST 5950 4H5MFS1?
EN ISO 4957 X40CrMoV5-1 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.