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JIS G4404 SKS31 vs KS D 3753 STS3

Related Material — 64.1% match based on chemical composition and mechanical property overlap.

JIS G4404 SKS31 (JIS G4404:2006) and KS D 3753 STS3 (KS D 3753:2023) are both steel grades. Both fall under the Tool & Die Steels category. JIS G4404 SKS31 is typically used for cold working molds, press dies, jigs, gauges, long taps, reamers, measuring tools requiring minimal quenching distortion., while KS D 3753 STS3 is commonly used for used in chisels, punches, dies, shear tools, gauges, and hand tools.. JIS G4404 SKS31 is defined under Japanese Industrial Standards (JIS), originating from Japan, while KS D 3753 STS3 is defined under Korean Industrial Standards (KS), originating from South Korea.

As per chemical composition, JIS G4404 SKS31 vs KS D 3753 STS3 is a 70.3% match. As per mechanical properties, the match is 51.9%. Combined, this makes them a related material overall at 64.1%.

Frequently Compared With JIS G4404 SKS31:
EN ISO 4957 1.2316 DIN EN ISO 4957 1.2344 DIN EN ISO 4957 1.2379 GB/T 1299 4Cr5MoSiV EN ISO 683-17 100Cr6 AISI 52100 GB/T 1299 4Cr5MoSiV1 GOST 5950 4H5MFS1 GB/T 1299 3Cr2W8V GOST 5950 3H2W8F GOST 5950 4H5MFS
Other Tool & Die Steels Grades to Compare With JIS G4404 SKS31:
IS 3748 103T3
Match Breakdown
CHEMISTRY MATCH
70.3%
MECHANICAL MATCH
51.9%
OVERALL
64.1%
Specifications
Property JIS G4404 SKS31 KS D 3753 STS3
Standard JIS G4404:2006 KS D 3753:2023
Category Tool & Die Steels Tool & Die Steels
C (%) 0.95-1.05 0.80-0.90
Si (%) <=0.35 0.15-0.35
Mn (%) 0.90-1.20 0.30-0.60
P (%) <=0.03 0.030 max
S (%) <=0.03 0.030 max
Cr (%) 0.80-1.20 0.50-1.00
W (%) 1.00-1.50 0.50-1.00
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 SKS31 KS D 3753 STS3
Tensile Strength 900-1150 MPa 880-1100 MPa
Yield Strength 750 MPa min 700 MPa min
Elongation 10% min 10% min
Hardness 58-62 HRC 56-60 HRC
Typical Applications
JIS G4404 SKS31
Cold working molds, press dies, jigs, gauges, long taps, reamers, measuring tools requiring minimal quenching distortion.
KS D 3753 STS3
Used in chisels, punches, dies, shear tools, gauges, and hand tools.
Can JIS G4404 SKS31 Be Substituted With KS D 3753 STS3?
JIS G4404 SKS31 and KS D 3753 STS3 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 SKS31
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2500–3700 mm (98.43–145.67 in)
KS D 3753 STS3
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2500–2600 mm (98.43–102.36 in)
On M-EX Right Now
JIS G4404 SKS31
2 active listings and RFQs →
KS D 3753 STS3
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between JIS G4404 SKS31 and KS D 3753 STS3?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can JIS G4404 SKS31 be substituted with KS D 3753 STS3?
JIS G4404 SKS31 and KS D 3753 STS3 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.