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JIS G4404 SKD11 vs ASTM A681 D4

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

JIS G4404 SKD11 (JIS G4404:2006) and ASTM A681 D4 (ASTM A681:2008) are both steel grades. Both fall under the Tool & Die Steels category. JIS G4404 SKD11 is typically used for precision blanking dies, cold forming tools, gauges, while ASTM A681 D4 is commonly used for tools, dies and fixtures (clause 1.2). JIS G4404 SKD11 is defined under Japanese Industrial Standards (JIS), originating from Japan, while ASTM A681 D4 is defined under ASTM International, originating from United States.

As per chemical composition, JIS G4404 SKD11 vs ASTM A681 D4 is a 81% match. As per mechanical properties, the match is 100%. Combined, this makes them a related material overall at 69.9%.

Frequently Compared With JIS G4404 SKD11:
EN ISO 683-17 100Cr6 GB/T 1299 4Cr5MoSiV1 GB/T 1299 4Cr5MoSiV EN ISO 4957 1.2316 GOST 5950 3H2W8F GOST 5950 4H5MFS1 DIN EN ISO 4957 1.2379 DIN EN ISO 4957 1.2344 GB/T 1299 3Cr2W8V GOST 5950 4H5MFS AISI 52100 IS 1570 (Part 6) 103T3
Match Breakdown
CHEMISTRY MATCH
81%
MECHANICAL MATCH
100%
OVERALL
69.9%
Specifications
Property JIS G4404 SKD11 ASTM A681 D4
Standard JIS G4404:2006 ASTM A681:2008
Category Tool & Die Steels Tool & Die Steels
C (%) 1.40-1.60 2.05-2.40
Si (%) <=0.40 0.10-0.60
Mn (%) <=0.60 0.10-0.60
Cr (%) 11.00-13.00 11.00-13.00
Mo (%) 0.80-1.20 0.70-1.20
V (%) 0.20-0.50 0.15-1.00
P (%) Not specified <=0.030
S (%) Not specified <=0.030
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 SKD11 ASTM A681 D4
Hardness HRC (hardened) 58-62 Not specified
Hardness HB (annealed) <=255 Not specified
Hardness Not specified <=255 HB
Condition Not specified Annealed (maximum Brinell hardness)
Typical Applications
JIS G4404 SKD11
Precision blanking dies, cold forming tools, gauges
ASTM A681 D4
Tools, dies and fixtures (clause 1.2)
Key Differences
Can JIS G4404 SKD11 Be Substituted With ASTM A681 D4?
JIS G4404 SKD11 and ASTM A681 D4 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 SKD11
Round Bar → (3 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2500–3000 mm (98.43–118.11 in)
ASTM A681 D4
No active listings currently.
On M-EX Right Now
JIS G4404 SKD11
3 active listings and RFQs →
ASTM A681 D4
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Frequently Asked Questions
What is the difference between JIS G4404 SKD11 and ASTM A681 D4?
ASTM A681 D4 specifies P, S which are not specified for JIS G4404 SKD11.
Can JIS G4404 SKD11 be substituted with ASTM A681 D4?
JIS G4404 SKD11 and ASTM A681 D4 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.