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AISI 3310 vs BS 970 (Part 1) 635H15

Related Material — 69.4% match based on chemical composition and mechanical property overlap.

AISI 3310 and BS 970 (Part 1) 635H15 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Alloy Steel category. AISI 3310 is typically used for aircraft gears, heavily stressed case hardened parts, while BS 970 (Part 1) 635H15 is commonly used for case hardening steel (section four). AISI 3310 is defined under AISI, originating from United States, while BS 970 (Part 1) 635H15 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, AISI 3310 vs BS 970 (Part 1) 635H15 is a 69.4% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a related material overall at 69.4%.

Frequently Compared With AISI 3310:
UNI 11234 100Cr6 NF A35-565 100C6 GOST 4543 12HN3A GB/T 3077 12Cr2Ni4A IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 07Cr4Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10
Match Breakdown
CHEMISTRY MATCH
69.4%
MECHANICAL MATCH
No shared data
OVERALL
69.4%
Specifications
Property AISI 3310 BS 970 (Part 1) 635H15
Standard AISI BS 970 (Part 1):1991
Category Alloy Steel Alloy Steel
C (%) 0.08–0.13 0.12-0.18
Mn (%) 0.40-0.60 0.60-0.90
Cr (%) 1.40–1.75 0.40-0.80
Ni (%) 3.25–3.75 0.70-1.10
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property AISI 3310 BS 970 (Part 1) 635H15
Tensile Strength 900–1100 MPa Not specified
Case Hardness HRC 60–65 Not specified
Elongation ≥10% Not specified
Typical Applications
AISI 3310
Aircraft gears, heavily stressed case hardened parts
BS 970 (Part 1) 635H15
Case hardening steel (section four)
Can AISI 3310 Be Substituted With BS 970 (Part 1) 635H15?
AISI 3310 and BS 970 (Part 1) 635H15 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 3310
Round Bar → (3 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 4900–5600 mm (192.91–220.47 in)
BS 970 (Part 1) 635H15
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On M-EX Right Now
AISI 3310
3 active listings and RFQs →
BS 970 (Part 1) 635H15
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Frequently Asked Questions
What is the difference between AISI 3310 and BS 970 (Part 1) 635H15?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can AISI 3310 be substituted with BS 970 (Part 1) 635H15?
AISI 3310 and BS 970 (Part 1) 635H15 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.