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GOST 5950 4H5MFS1 vs EN ISO 683-17 100Cr6

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

GOST 5950 4H5MFS1 (GOST 5950-2000) and EN ISO 683-17 100Cr6 (EN ISO 683-17:2014) 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 EN ISO 683-17 100Cr6 is commonly used for rolling element bearings, precision components, cold work tooling. EN ISO 683-17 100Cr6 is defined under European Standard (EN) (Europe).

As per chemical composition, GOST 5950 4H5MFS1 vs EN ISO 683-17 100Cr6 is a 59.5% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With GOST 5950 4H5MFS1:
GB/T 1299 4Cr5MoSiV1 GOST 5950 4H5MFS GB/T 1299 4Cr5MoSiV EN ISO 4957 1.2316 AISI 52100 IS 1570 (Part 6) 133T3 DIN EN ISO 4957 1.2344 DIN EN ISO 4957 1.2379 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
35%
Specifications
Property GOST 5950 4H5MFS1 EN ISO 683-17 100Cr6
Standard GOST 5950-2000 EN ISO 683-17:2014
Category Tool & Die Steels Tool & Die Steels
C (%) 0.35-0.45 0.93–1.05
Cr (%) 4.5-5.5 1.35–1.65
Mo (%) 1.2-1.6 Not specified
V (%) 0.3-0.6 Not specified
Si (%) 0.8-1.2 0.15–0.35
Mn (%) Not specified 0.25–0.45
S (%) Not specified ≤0.025
P (%) Not specified ≤0.025
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 EN ISO 683-17 100Cr6
Tensile Strength 1350-1650 MPa ≥620 MPa (annealed)
Yield Strength 1150 MPa min Not specified
Elongation 9% min Not specified
Hardness 44-50 HRC Not specified
Hardness HRC Not specified 60–66 (hardened)
Hardness HB Not specified 179–217 (annealed)
Typical Applications
GOST 5950 4H5MFS1
Used for forging dies, pressure casting dies, hot punches, extrusion tooling, and die inserts.
EN ISO 683-17 100Cr6
Rolling element bearings, precision components, cold work tooling
Key Differences
Can GOST 5950 4H5MFS1 Be Substituted With EN ISO 683-17 100Cr6?
GOST 5950 4H5MFS1 and EN ISO 683-17 100Cr6 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)
EN ISO 683-17 100Cr6
Round Bar → (18 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 3000–6500 mm (118.11–255.91 in)
On M-EX Right Now
GOST 5950 4H5MFS1
2 active listings and RFQs →
EN ISO 683-17 100Cr6
18 active listings and RFQs →
Frequently Asked Questions
What is the difference between GOST 5950 4H5MFS1 and EN ISO 683-17 100Cr6?
GOST 5950 4H5MFS1 specifies Mo, V which are not specified for EN ISO 683-17 100Cr6. EN ISO 683-17 100Cr6 specifies Mn, S, P which are not specified for GOST 5950 4H5MFS1.
Can GOST 5950 4H5MFS1 be substituted with EN ISO 683-17 100Cr6?
GOST 5950 4H5MFS1 and EN ISO 683-17 100Cr6 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.