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GOST 5950 4H5MFS1 vs DIN EN ISO 4957 1.2379

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

GOST 5950 4H5MFS1 (GOST 5950-2000) and DIN EN ISO 4957 1.2379 (DIN EN ISO 4957:2018-11) are both steel grades. Both fall under the Tool & Die Steels category. GOST 5950 4H5MFS1 is typically used for used for forging dies, pressure casting dies, hot punches, extrusion tooling, and die inserts., while DIN EN ISO 4957 1.2379 is commonly used for blanking dies, forming dies, thread rolling dies, punches, shear blades, gauges, broaches, drawing dies. DIN EN ISO 4957 1.2379 is defined under European Standard (EN) (Europe).

As per chemical composition, GOST 5950 4H5MFS1 vs DIN EN ISO 4957 1.2379 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 GOST 5950 4H5MFS1:
GB/T 1299 4Cr5MoSiV1 GOST 5950 4H5MFS EN ISO 683-17 100Cr6 GB/T 1299 4Cr5MoSiV EN ISO 4957 1.2316 AISI 52100 IS 1570 (Part 6) 133T3 DIN EN ISO 4957 1.2344 IS 3748 103T3 IS 1570 (Part 6) 103T3 IS 3748 118T3 IS 1570 (Part 6) 118T3
Match Breakdown
CHEMISTRY MATCH
59.5%
MECHANICAL MATCH
0%
OVERALL
39.6%
Specifications
Property GOST 5950 4H5MFS1 DIN EN ISO 4957 1.2379
Standard GOST 5950-2000 DIN EN ISO 4957:2018-11
Category Tool & Die Steels Tool & Die Steels
C (%) 0.35-0.45 1.50–1.60
Cr (%) 4.5-5.5 11.00–13.00
Mo (%) 1.2-1.6 0.70–1.00
V (%) 0.3-0.6 0.80–1.10
Si (%) 0.8-1.2 0.10–0.40
Mn (%) Not specified 0.25–0.60
S (%) Not specified ≤0.030
P (%) Not specified ≤0.030
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property GOST 5950 4H5MFS1 DIN EN ISO 4957 1.2379
Tensile Strength 1350-1650 MPa Not specified
Yield Strength 1150 MPa min Not specified
Elongation 9% min Not specified
Hardness 44-50 HRC Not specified
Hardness (annealed) Not specified ≤255 HB
Hardness (hardened) Not specified 58–62 HRC
Compressive Strength Not specified 2600 MPa
Typical Applications
GOST 5950 4H5MFS1
Used for forging dies, pressure casting dies, hot punches, extrusion tooling, and die inserts.
DIN EN ISO 4957 1.2379
Blanking dies, forming dies, thread rolling dies, punches, shear blades, gauges, broaches, drawing dies
Key Differences
Can GOST 5950 4H5MFS1 Be Substituted With DIN EN ISO 4957 1.2379?
GOST 5950 4H5MFS1 and DIN EN ISO 4957 1.2379 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
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)
DIN EN ISO 4957 1.2379
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2800–3300 mm (110.24–129.92 in)
On M-EX Right Now
GOST 5950 4H5MFS1
2 active listings and RFQs →
DIN EN ISO 4957 1.2379
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GOST 5950 4H5MFS1 and DIN EN ISO 4957 1.2379?
DIN EN ISO 4957 1.2379 specifies Mn, S, P which are not specified for GOST 5950 4H5MFS1.
Can GOST 5950 4H5MFS1 be substituted with DIN EN ISO 4957 1.2379?
GOST 5950 4H5MFS1 and DIN EN ISO 4957 1.2379 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.