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JIS G4404 SKS93 vs GOST 5950 4H5MFS1

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

JIS G4404 SKS93 (JIS G4404:2006) and GOST 5950 4H5MFS1 (GOST 5950-2000) are both steel grades. Both fall under the Tool & Die Steels category. JIS G4404 SKS93 is typically used for cold working molds, press dies, blanking dies, shear blades, gauges, jigs., while GOST 5950 4H5MFS1 is commonly used for used for forging dies, pressure casting dies, hot punches, extrusion tooling, and die inserts.. JIS G4404 SKS93 is defined under Japanese Industrial Standards (JIS) (Japan).

As per chemical composition, JIS G4404 SKS93 vs GOST 5950 4H5MFS1 is a 57.3% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With JIS G4404 SKS93:
GOST 5950 4H5MFS EN ISO 683-17 100Cr6 AISI 52100 GB/T 1299 3Cr2W8V GB/T 1299 4Cr5MoSiV1 DIN EN ISO 4957 1.2344 GOST 5950 3H2W8F GB/T 1299 4Cr5MoSiV EN ISO 4957 1.2316 DIN EN ISO 4957 1.2379 IS 3748 103T3 IS 1570 (Part 6) 103T3
Match Breakdown
CHEMISTRY MATCH
57.3%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property JIS G4404 SKS93 GOST 5950 4H5MFS1
Standard JIS G4404:2006 GOST 5950-2000
Category Tool & Die Steels Tool & Die Steels
C (%) 1.00-1.10 0.35-0.45
Si (%) <=0.50 0.8-1.2
Mn (%) 0.80-1.10 Not specified
P (%) <=0.03 Not specified
S (%) <=0.03 Not specified
Cr (%) 0.20-0.60 4.5-5.5
Mo (%) Not specified 1.2-1.6
V (%) Not specified 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 JIS G4404 SKS93 GOST 5950 4H5MFS1
Hardness HRC (hardened) 60–64 Not specified
Hardness HB (annealed) ≤212 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
JIS G4404 SKS93
Cold working molds, press dies, blanking dies, shear blades, gauges, jigs.
GOST 5950 4H5MFS1
Used for forging dies, pressure casting dies, hot punches, extrusion tooling, and die inserts.
Key Differences
Can JIS G4404 SKS93 Be Substituted With GOST 5950 4H5MFS1?
JIS G4404 SKS93 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
JIS G4404 SKS93
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 3200–3300 mm (125.98–129.92 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
JIS G4404 SKS93
2 active listings and RFQs →
GOST 5950 4H5MFS1
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between JIS G4404 SKS93 and GOST 5950 4H5MFS1?
JIS G4404 SKS93 specifies Mn, P, S which are not specified for GOST 5950 4H5MFS1. GOST 5950 4H5MFS1 specifies Mo, V which are not specified for JIS G4404 SKS93.
Can JIS G4404 SKS93 be substituted with GOST 5950 4H5MFS1?
JIS G4404 SKS93 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.