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BS 970 (Part 1) 808M17 vs BS 970 (Part 1) 805M20

Close Alternative — 83.2% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 808M17 (BS 970 (Part 1):1983) and BS 970 (Part 1) 805M20 (BS 970 (Part 1):1983) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 1) 808M17 is typically used for case hardening steel for mechanical and allied engineering purposes (table 11 mechanical properties)., while BS 970 (Part 1) 805M20 is commonly used for case hardening steel for mechanical and allied engineering purposes (table 11 mechanical properties).. BS 970 (Part 1) 808M17 is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 1) 805M20 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 (Part 1) 808M17 vs BS 970 (Part 1) 805M20 is a 83.2% match. Mechanical property data is not available for both grades, so this factor could not be scored. Combined, this makes them a close alternative overall at 83.2%.

Frequently Compared With BS 970 (Part 1) 808M17:
IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 NF A35-565 100C6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 07Cr4Mo6 UNI 11234 100Cr6 IS 1570 (Part 7) 10Mo6H IS 1570 (Part 4) 07Cr4Mo6 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6
Match Breakdown
CHEMISTRY MATCH
83.2%
MECHANICAL MATCH
No shared data
OVERALL
83.2%
Specifications
Property BS 970 (Part 1) 808M17 BS 970 (Part 1) 805M20
Standard BS 970 (Part 1):1983 BS 970 (Part 1):1983
Category Alloy Steel Alloy Steel
C (%) 0.14-0.20 0.17-0.23
Mn (%) 0.70-1.05 0.60-0.95
Cr (%) 0.35-0.65 0.35-0.65
Mo (%) 0.30-0.40 0.15-0.25
Ni (%) 0.35-0.75 0.35-0.75
P (%) <=0.035 <=0.035
S (%) <=0.040 <=0.040
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Typical Applications
BS 970 (Part 1) 808M17
Case hardening steel for mechanical and allied engineering purposes (Table 11 mechanical properties).
BS 970 (Part 1) 805M20
Case hardening steel for mechanical and allied engineering purposes (Table 11 mechanical properties).
Can BS 970 (Part 1) 808M17 Be Substituted With BS 970 (Part 1) 805M20?
BS 970 (Part 1) 808M17 and BS 970 (Part 1) 805M20 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.
On M-EX Right Now
BS 970 (Part 1) 808M17
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BS 970 (Part 1) 805M20
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 808M17 and BS 970 (Part 1) 805M20?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 (Part 1) 808M17 be substituted with BS 970 (Part 1) 805M20?
BS 970 (Part 1) 808M17 and BS 970 (Part 1) 805M20 are a close alternative rather than a direct substitute. Some properties overlap well, but check the specific chemistry and mechanical rows above against your application's requirements before treating them as interchangeable.