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BS 970 EN351 vs BS 970 (Part 1) 805H17

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

BS 970 EN351 (BS 970:1955) and BS 970 (Part 1) 805H17 (BS 970 (Part 1):1991) are both steel grades. Both fall under the Alloy Steel category. BS 970 EN351 is typically used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. suitable for tensile strength 45 tons/sq in min., while BS 970 (Part 1) 805H17 is commonly used for case hardening steel (section four). BS 970 EN351 is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 1) 805H17 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN351 vs BS 970 (Part 1) 805H17 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 BS 970 EN351:
IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6 IS 1570 (Part 7) 10Mo6H IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6
Match Breakdown
CHEMISTRY MATCH
69.4%
MECHANICAL MATCH
No shared data
OVERALL
69.4%
Specifications
Property BS 970 EN351 BS 970 (Part 1) 805H17
Standard BS 970:1955 BS 970 (Part 1):1991
Category Alloy Steel Alloy Steel
C (%) <=0.20 0.14-0.20
Si (%) <=0.35 Not specified
Mn (%) 0.60-1.00 0.60-0.95
Ni (%) 0.60-1.00 0.35-0.75
Cr (%) 0.40-0.80 0.35-0.65
Mo (%) <=0.10 0.15-0.25
S (%) <=0.050 Not specified
P (%) <=0.050 Not specified
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 EN351 BS 970 (Part 1) 805H17
Tensile Strength ≥695 MPa (45 tons/sq in, converted) Not specified
Elongation ≥18% Not specified
Condition core, min (lowest-strength condition of the standard) Not specified
Typical Applications
BS 970 EN351
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Suitable for tensile strength 45 tons/sq in min.
BS 970 (Part 1) 805H17
Case hardening steel (section four)
Key Differences
Can BS 970 EN351 Be Substituted With BS 970 (Part 1) 805H17?
BS 970 EN351 and BS 970 (Part 1) 805H17 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.
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BS 970 EN351
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BS 970 (Part 1) 805H17
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Frequently Asked Questions
What is the difference between BS 970 EN351 and BS 970 (Part 1) 805H17?
BS 970 EN351 specifies Si, S, P which are not specified for BS 970 (Part 1) 805H17.
Can BS 970 EN351 be substituted with BS 970 (Part 1) 805H17?
BS 970 EN351 and BS 970 (Part 1) 805H17 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.