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JIS G4404 SKD1 vs GB/T 1299 4Cr5MoSiV

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

JIS G4404 SKD1 (JIS G4404:2006) and GB/T 1299 4Cr5MoSiV (GB/T 1299-2014) are both steel grades. Both fall under the Tool & Die Steels category. JIS G4404 SKD1 is typically used for cold forming dies, bending dies, while GB/T 1299 4Cr5MoSiV is commonly used for die casting dies, extrusion tooling. JIS G4404 SKD1 is defined under Japanese Industrial Standards (JIS), originating from Japan, while GB/T 1299 4Cr5MoSiV is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, JIS G4404 SKD1 vs GB/T 1299 4Cr5MoSiV is a 62.7% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 35%.

Frequently Compared With JIS G4404 SKD1:
EN ISO 683-17 100Cr6 GOST 5950 4H5MFS AISI 52100 EN ISO 4957 1.2316 GB/T 1299 4Cr5MoSiV1 DIN EN ISO 4957 1.2344 GB/T 1299 3Cr2W8V GOST 5950 3H2W8F GOST 5950 4H5MFS1 DIN EN ISO 4957 1.2379 IS 1570 (Part 6) 103T3
Other Tool & Die Steels Grades to Compare With JIS G4404 SKD1:
IS 3748 103T3
Match Breakdown
CHEMISTRY MATCH
62.7%
MECHANICAL MATCH
0%
OVERALL
35%
Specifications
Property JIS G4404 SKD1 GB/T 1299 4Cr5MoSiV
Standard JIS G4404:2006 GB/T 1299-2014
Category Tool & Die Steels Tool & Die Steels
C (%) 1.80-2.40 0.32–0.45
Si (%) <=0.40 0.80–1.20
Mn (%) <=0.50 0.20–0.50
Cr (%) 11.00-13.00 4.75–5.50
Mo (%) Not specified 1.10–1.60
V (%) Not specified 0.30–0.60
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 SKD1 GB/T 1299 4Cr5MoSiV
Hardness HRC (hardened) 58-64 40–54
Hardness HB (annealed) <=269 ≤235
Typical Applications
JIS G4404 SKD1
Cold forming dies, bending dies
GB/T 1299 4Cr5MoSiV
Die casting dies, extrusion tooling
Key Differences
Can JIS G4404 SKD1 Be Substituted With GB/T 1299 4Cr5MoSiV?
JIS G4404 SKD1 and GB/T 1299 4Cr5MoSiV 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 SKD1
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 3300–3600 mm (129.92–141.73 in)
GB/T 1299 4Cr5MoSiV
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 SKD1
2 active listings and RFQs →
GB/T 1299 4Cr5MoSiV
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between JIS G4404 SKD1 and GB/T 1299 4Cr5MoSiV?
GB/T 1299 4Cr5MoSiV specifies Mo, V which are not specified for JIS G4404 SKD1.
Can JIS G4404 SKD1 be substituted with GB/T 1299 4Cr5MoSiV?
JIS G4404 SKD1 and GB/T 1299 4Cr5MoSiV 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.