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AISI 4340 vs IS 4367 10Cr9Mo10

Minimal Match — 37.5% match based on chemical composition and mechanical property overlap.

AISI 4340 and IS 4367 10Cr9Mo10 (IS 4367:1991) are both steel grades. Both fall under the Alloy Steel category. AISI 4340 is defined under AISI, originating from United States, while IS 4367 10Cr9Mo10 is defined under Bureau of Indian Standards (IS), originating from India.

As per chemical composition, AISI 4340 vs IS 4367 10Cr9Mo10 is a 56.3% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 37.5%.

Frequently Compared With AISI 4340:
NF A35-565 100C6 UNI 11234 100Cr6 GB/T 3077 12Cr2Ni4A GOST 4543 12HN3A IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 105Cr5 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 4) 07Cr4Mo6 EN 10028-2 10CrMo9-10
Match Breakdown
CHEMISTRY MATCH
56.3%
MECHANICAL MATCH
0%
OVERALL
37.5%
Specifications
Property AISI 4340 IS 4367 10Cr9Mo10
Standard AISI IS 4367:1991
Category Alloy Steel Alloy Steel
C (%) 0.38–0.43 <=0.15
Mn (%) 0.60–0.80 0.40-0.70
Cr (%) 0.70–0.90 2.00-2.50
Mo (%) 0.20–0.30 0.90-1.10
Ni (%) 1.65–2.00 <=0.30
Si (%) 0.15–0.35 <=0.50
S (%) Not specified <=0.035
P (%) Not specified <=0.035
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property AISI 4340 IS 4367 10Cr9Mo10
Condition Quenched & Tempered Normalised and tempered, ruling section up to 50 mm
Tensile Strength 1000–1200 MPa 410-590 MPa
Yield Strength ≥830 MPa 245 MPa min
Elongation ≥12% >=18%
Hardness 285–341 HB Not specified
Izod Impact Not specified 55 J min
Hardness (soft annealed) Not specified <=187 HB
Typical Applications
AISI 4340
Aircraft parts, heavy duty gears, crankshafts, high tensile bolts
IS 4367 10Cr9Mo10
Not documented
Key Differences
Can AISI 4340 Be Substituted With IS 4367 10Cr9Mo10?
AISI 4340 and IS 4367 10Cr9Mo10 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
AISI 4340
Round Bar → (3 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5900–6800 mm (232.28–267.72 in)
IS 4367 10Cr9Mo10
No active listings currently.
On M-EX Right Now
AISI 4340
3 active listings and RFQs →
IS 4367 10Cr9Mo10
0 active listings and RFQs →
Frequently Asked Questions
What is the difference between AISI 4340 and IS 4367 10Cr9Mo10?
IS 4367 10Cr9Mo10 specifies S, P which are not specified for AISI 4340.
Can AISI 4340 be substituted with IS 4367 10Cr9Mo10?
AISI 4340 and IS 4367 10Cr9Mo10 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.