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BS 970 (Part 3) 805M17 vs AISI 8617

Strong Match — 88.3% match based on chemical composition and mechanical property overlap.

BS 970 (Part 3) 805M17 (BS 970 (Part 3):1991) and AISI 8617 are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 3) 805M17 is typically used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (table 15), while AISI 8617 is commonly used for used for gears, camshafts, transmission parts, pinions, bearings, and heavy-duty mechanical components.. BS 970 (Part 3) 805M17 is defined under British Standards (BS), originating from United Kingdom, while AISI 8617 is defined under AISI, originating from United States.

As per chemical composition, BS 970 (Part 3) 805M17 vs AISI 8617 is a 88.3% 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 88.3%.

Frequently Compared With BS 970 (Part 3) 805M17:
NF A35-565 100C6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 4367 07Cr4Mo6 IS 1570 (Part 4) 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H
Match Breakdown
CHEMISTRY MATCH
88.3%
MECHANICAL MATCH
No shared data
OVERALL
88.3%
Specifications
Property BS 970 (Part 3) 805M17 AISI 8617
Standard BS 970 (Part 3):1991 AISI
Category Alloy Steel Alloy Steel
C (%) 0.14-0.20 0.15-0.20
Si (%) 0.10-0.40 0.15-0.35
Mn (%) 0.60-0.95 0.70-0.90
Cr (%) 0.35-0.65 0.40-0.60
Mo (%) 0.15-0.25 0.15-0.25
Ni (%) 0.35-0.75 0.40-0.70
P (%) <=0.04 0.035 max
S (%) <=0.05 0.040 max
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property BS 970 (Part 3) 805M17 AISI 8617
Tensile Strength Not specified 720-920 MPa
Yield Strength Not specified 520-720 MPa
Elongation Not specified 12-18%
Hardness Not specified 190-250 HB
Typical Applications
BS 970 (Part 3) 805M17
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy case hardening steel (Table 15)
AISI 8617
Used for gears, camshafts, transmission parts, pinions, bearings, and heavy-duty mechanical components.
Can BS 970 (Part 3) 805M17 Be Substituted With AISI 8617?
BS 970 (Part 3) 805M17 and AISI 8617 overlap closely enough on chemistry and mechanical properties that AISI 8617 is often considered as a substitute for BS 970 (Part 3) 805M17 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
BS 970 (Part 3) 805M17
No active listings currently.
AISI 8617
Round Bar → (2 listings)
Diameter: 50–50 mm (1.97–1.97 in)
Length: 5100–6600 mm (200.79–259.84 in)
On M-EX Right Now
BS 970 (Part 3) 805M17
0 active listings and RFQs →
AISI 8617
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between BS 970 (Part 3) 805M17 and AISI 8617?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 (Part 3) 805M17 be substituted with AISI 8617?
BS 970 (Part 3) 805M17 and AISI 8617 overlap closely enough on chemistry and mechanical properties that AISI 8617 is often considered as a substitute for BS 970 (Part 3) 805M17 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.