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AISI 8617 vs BS 970 (Part 1) 805A17

Strong Match — 94.3% match based on chemical composition and mechanical property overlap.

AISI 8617 and BS 970 (Part 1) 805A17 (BS 970 (Part 1):1983) are both steel grades. Both fall under the Alloy Steel category. AISI 8617 is typically used for used for gears, camshafts, transmission parts, pinions, bearings, and heavy-duty mechanical components., while BS 970 (Part 1) 805A17 is commonly used for case hardening steel for mechanical and allied engineering purposes (table 11 mechanical properties).. AISI 8617 is defined under AISI, originating from United States, while BS 970 (Part 1) 805A17 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, AISI 8617 vs BS 970 (Part 1) 805A17 is a 94.3% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a strong match overall at 94.3%.

Frequently Compared With AISI 8617:
NF A35-565 100C6 UNI 11234 100Cr6 GB/T 3077 12Cr2Ni4A GOST 4543 12HN3A IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 103Cr4 IS 4367 07Cr4Mo6 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 07Cr4Mo6 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H
Match Breakdown
CHEMISTRY MATCH
94.3%
MECHANICAL MATCH
No shared data
OVERALL
94.3%
Specifications
Property AISI 8617 BS 970 (Part 1) 805A17
Standard AISI BS 970 (Part 1):1983
Category Alloy Steel Alloy Steel
C (%) 0.15-0.20 0.15-0.20
Mn (%) 0.70-0.90 0.70-0.90
Si (%) 0.15-0.35 Not specified
Ni (%) 0.40-0.70 0.40-0.70
Cr (%) 0.40-0.60 0.40-0.60
Mo (%) 0.15-0.25 0.15-0.25
P (%) 0.035 max <=0.035
S (%) 0.040 max <=0.040
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property AISI 8617 BS 970 (Part 1) 805A17
Tensile Strength 720-920 MPa Not specified
Yield Strength 520-720 MPa Not specified
Elongation 12-18% Not specified
Hardness 190-250 HB Not specified
Typical Applications
AISI 8617
Used for gears, camshafts, transmission parts, pinions, bearings, and heavy-duty mechanical components.
BS 970 (Part 1) 805A17
Case hardening steel for mechanical and allied engineering purposes (Table 11 mechanical properties).
Key Differences
Can AISI 8617 Be Substituted With BS 970 (Part 1) 805A17?
AISI 8617 and BS 970 (Part 1) 805A17 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 805A17 is often considered as a substitute for AISI 8617 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
Forms & Sizes Available on M-EX
AISI 8617
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5100–6600 mm (200.79–259.84 in)
BS 970 (Part 1) 805A17
No active listings currently.
On M-EX Right Now
AISI 8617
2 active listings and RFQs →
BS 970 (Part 1) 805A17
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Frequently Asked Questions
What is the difference between AISI 8617 and BS 970 (Part 1) 805A17?
AISI 8617 specifies Si which is not specified for BS 970 (Part 1) 805A17.
Can AISI 8617 be substituted with BS 970 (Part 1) 805A17?
AISI 8617 and BS 970 (Part 1) 805A17 overlap closely enough on chemistry and mechanical properties that BS 970 (Part 1) 805A17 is often considered as a substitute for AISI 8617 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.