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JIS G4404 SKD6 vs GOST 5950 4H5MFS

Related Material — 56.7% match based on chemical composition and mechanical property overlap.

JIS G4404 SKD6 (JIS G4404:2006) and GOST 5950 4H5MFS (GOST 5950-2000) are both steel grades. Both fall under the Tool & Die Steels category. JIS G4404 SKD6 is typically used for die casting dies, hot forging tools, while GOST 5950 4H5MFS is commonly used for used for die casting dies, forging tools, extrusion dies, punches, and hot shear blades.. JIS G4404 SKD6 is defined under Japanese Industrial Standards (JIS) (Japan).

As per chemical composition, JIS G4404 SKD6 vs GOST 5950 4H5MFS is a 85% match. As per mechanical properties, the match is 0%. Combined, this makes them a related material overall at 56.7%.

Frequently Compared With JIS G4404 SKD6:
GOST 5950 4H5MFS1 EN ISO 683-17 100Cr6 AISI 52100 GB/T 1299 4Cr5MoSiV EN ISO 4957 1.2316 GOST 5950 3H2W8F GB/T 1299 3Cr2W8V DIN EN ISO 4957 1.2344 DIN EN ISO 4957 1.2379 GB/T 1299 4Cr5MoSiV1 IS 1570 (Part 6) 103T3 IS 3748 103T3
Match Breakdown
CHEMISTRY MATCH
85%
MECHANICAL MATCH
0%
OVERALL
56.7%
Specifications
Property JIS G4404 SKD6 GOST 5950 4H5MFS
Standard JIS G4404:2006 GOST 5950-2000
Category Tool & Die Steels Tool & Die Steels
C (%) 0.32-0.42 0.35-0.45
Si (%) 0.80-1.20 0.8-1.2
Mn (%) 0.25-0.50 Not specified
Cr (%) 4.50-5.50 4.5-5.5
Mo (%) 1.00-1.50 1.2-1.6
V (%) 0.30-0.50 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 SKD6 GOST 5950 4H5MFS
Hardness HRC (hardened) 40-52 Not specified
Hardness HB (annealed) <=229 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 SKD6
Die casting dies, hot forging tools
GOST 5950 4H5MFS
Used for die casting dies, forging tools, extrusion dies, punches, and hot shear blades.
Key Differences
Can JIS G4404 SKD6 Be Substituted With GOST 5950 4H5MFS?
JIS G4404 SKD6 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
JIS G4404 SKD6
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2500–3900 mm (98.43–153.54 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
JIS G4404 SKD6
2 active listings and RFQs →
GOST 5950 4H5MFS
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between JIS G4404 SKD6 and GOST 5950 4H5MFS?
JIS G4404 SKD6 specifies Mn which is not specified for GOST 5950 4H5MFS.
Can JIS G4404 SKD6 be substituted with GOST 5950 4H5MFS?
JIS G4404 SKD6 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.