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ASTM A681 S5 vs JIS G4404 SKD6

Related Material — 69.9% match based on chemical composition and mechanical property overlap.

ASTM A681 S5 (ASTM A681:2008) and JIS G4404 SKD6 (JIS G4404:2006) are both steel grades. Both fall under the Tool & Die Steels category. ASTM A681 S5 is typically used for tools, dies and fixtures (clause 1.2), while JIS G4404 SKD6 is commonly used for die casting dies, hot forging tools. ASTM A681 S5 is defined under ASTM International, originating from United States, while JIS G4404 SKD6 is defined under Japanese Industrial Standards (JIS), originating from Japan.

As per chemical composition, ASTM A681 S5 vs JIS G4404 SKD6 is a 60.3% match. As per mechanical properties, the match is 100%. Combined, this makes them a related material overall at 69.9%.

Frequently Compared With ASTM A681 S5:
EN ISO 4957 1.2316 DIN EN ISO 4957 1.2379 EN ISO 683-17 100Cr6 IS 1570 (Part 6) 103T3 IS 1570 (Part 6) 133T3 GOST 5950 4H5MFS DIN EN ISO 4957 1.2344 IS 1570 (Part 6) 118T3 GB/T 1299 3Cr2W8V GOST 5950 3H2W8F GB/T 1299 4Cr5MoSiV GB/T 1299 4Cr5MoSiV1
Match Breakdown
CHEMISTRY MATCH
60.3%
MECHANICAL MATCH
100%
OVERALL
69.9%
Specifications
Property ASTM A681 S5 JIS G4404 SKD6
Standard ASTM A681:2008 JIS G4404:2006
Category Tool & Die Steels Tool & Die Steels
C (%) 0.50-0.65 0.32-0.42
Mn (%) 0.60-1.00 0.25-0.50
P (%) <=0.030 Not specified
S (%) <=0.030 Not specified
Si (%) 1.75-2.25 0.80-1.20
Cr (%) 0.10-0.50 4.50-5.50
V (%) 0.15-0.35 0.30-0.50
Mo (%) 0.20-1.35 1.00-1.50
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property ASTM A681 S5 JIS G4404 SKD6
Hardness <=229 HB Not specified
Condition Annealed (maximum Brinell hardness) Not specified
Hardness HRC (hardened) Not specified 40-52
Hardness HB (annealed) Not specified <=229
Typical Applications
ASTM A681 S5
Tools, dies and fixtures (clause 1.2)
JIS G4404 SKD6
Die casting dies, hot forging tools
Key Differences
Can ASTM A681 S5 Be Substituted With JIS G4404 SKD6?
ASTM A681 S5 and JIS G4404 SKD6 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
ASTM A681 S5
No active listings currently.
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)
On M-EX Right Now
ASTM A681 S5
0 active listings and RFQs →
JIS G4404 SKD6
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A681 S5 and JIS G4404 SKD6?
ASTM A681 S5 specifies P, S which are not specified for JIS G4404 SKD6.
Can ASTM A681 S5 be substituted with JIS G4404 SKD6?
ASTM A681 S5 and JIS G4404 SKD6 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.