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JIS G4804 SUM43 vs IS 1570 (Part 3) 10C8S10

Minimal Match — 49.9% match based on chemical composition and mechanical property overlap.

JIS G4804 SUM43 (JIS G 4804:2021) and IS 1570 (Part 3) 10C8S10 (IS 1570 (Part 3):1979) are both steel grades. Both fall under the Free Machining Steel category. JIS G4804 SUM43 is defined under Japanese Industrial Standards (JIS), originating from Japan, while IS 1570 (Part 3) 10C8S10 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, JIS G4804 SUM43 vs IS 1570 (Part 3) 10C8S10 is a 74.8% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 49.9%.

Frequently Compared With JIS G4804 SUM43:
SAE J403 1144 SAE J403 1144 SAE J403 1144 SAE J403 1141 IS 4432 10C8S10 SAE J403 1117 SAE J403 1126 SAE J403 1141 SAE J403 1117 SAE J403 1117 SAE J403 1118 SAE J403 1141
Match Breakdown
CHEMISTRY MATCH
74.8%
MECHANICAL MATCH
0%
OVERALL
49.9%
Specifications
Property JIS G4804 SUM43 IS 1570 (Part 3) 10C8S10
Standard JIS G 4804:2021 IS 1570 (Part 3):1979
Category Free Machining Steel Free Machining Steel
C (%) 0.40–0.48 <=0.15
Mn (%) 1.35–1.65 0.60-0.90
S (%) 0.24–0.33 0.08-0.13
P (%) ≤0.040 <=0.060
Si (%) Not specified 0.05-0.30
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property JIS G4804 SUM43 IS 1570 (Part 3) 10C8S10
Tensile Strength 540–690 MPa 370-490 MPa
Elongation ≥9% >=24%
Hardness 163–207 HB Not specified
Condition Not specified Hot rolled or normalized bars, billets and forgings (Table 2), ruling sections up to 150 mm
Typical Applications
JIS G4804 SUM43
High speed automatic machining, automotive parts
IS 1570 (Part 3) 10C8S10
Not documented
Key Differences
Can JIS G4804 SUM43 Be Substituted With IS 1570 (Part 3) 10C8S10?
JIS G4804 SUM43 and IS 1570 (Part 3) 10C8S10 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 G4804 SUM43
Hex Bar → (2 listings)
Across Flats: 25–25 mm (0.98–0.98 in)
Length: 2600–3200 mm (102.36–125.98 in)
IS 1570 (Part 3) 10C8S10
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On M-EX Right Now
JIS G4804 SUM43
2 active listings and RFQs →
IS 1570 (Part 3) 10C8S10
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Frequently Asked Questions
What is the difference between JIS G4804 SUM43 and IS 1570 (Part 3) 10C8S10?
IS 1570 (Part 3) 10C8S10 specifies Si which is not specified for JIS G4804 SUM43.
Can JIS G4804 SUM43 be substituted with IS 1570 (Part 3) 10C8S10?
JIS G4804 SUM43 and IS 1570 (Part 3) 10C8S10 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.