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BS 970 (Part 1) 822H17 vs BS 970 EN355

Strong Match — 85.2% match based on chemical composition and mechanical property overlap.

BS 970 (Part 1) 822H17 (BS 970 (Part 1):1991) and BS 970 EN355 (BS 970:1955) are both steel grades. Both fall under the Alloy Steel category. BS 970 (Part 1) 822H17 is typically used for case hardening steel (section four), while BS 970 EN355 is commonly used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. suitable for tensile strength 85 tons/sq in min.. BS 970 (Part 1) 822H17 is defined under British Standards (BS), originating from United Kingdom, while BS 970 EN355 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 (Part 1) 822H17 vs BS 970 EN355 is a 85.2% 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 85.2%.

Frequently Compared With BS 970 (Part 1) 822H17:
IS 1570 (Part 4) 10Cr20Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 7) 10Cr36Mo10H IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6 IS 4367 07Cr4Mo6 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 7) 10Mo6H
Match Breakdown
CHEMISTRY MATCH
85.2%
MECHANICAL MATCH
No shared data
OVERALL
85.2%
Specifications
Property BS 970 (Part 1) 822H17 BS 970 EN355
Standard BS 970 (Part 1):1991 BS 970:1955
Category Alloy Steel Alloy Steel
C (%) 0.14-0.20 <=0.20
Mn (%) 0.40-0.70 0.40-0.70
Cr (%) 1.30-1.70 1.40-1.70
Mo (%) 0.15-0.25 0.15-0.25
Ni (%) 1.75-2.25 1.80-2.20
Si (%) Not specified <=0.35
S (%) Not specified <=0.050
P (%) Not specified <=0.050
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 1) 822H17 BS 970 EN355
Tensile Strength Not specified ≥1313 MPa (85 tons/sq in, converted)
Elongation Not specified ≥12%
Condition Not specified core, min (lowest-strength condition of the standard)
Typical Applications
BS 970 (Part 1) 822H17
Case hardening steel (section four)
BS 970 EN355
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Suitable for tensile strength 85 tons/sq in min.
Key Differences
Can BS 970 (Part 1) 822H17 Be Substituted With BS 970 EN355?
BS 970 (Part 1) 822H17 and BS 970 EN355 overlap closely enough on chemistry and mechanical properties that BS 970 EN355 is often considered as a substitute for BS 970 (Part 1) 822H17 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
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BS 970 (Part 1) 822H17
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BS 970 EN355
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Frequently Asked Questions
What is the difference between BS 970 (Part 1) 822H17 and BS 970 EN355?
BS 970 EN355 specifies Si, S, P which are not specified for BS 970 (Part 1) 822H17.
Can BS 970 (Part 1) 822H17 be substituted with BS 970 EN355?
BS 970 (Part 1) 822H17 and BS 970 EN355 overlap closely enough on chemistry and mechanical properties that BS 970 EN355 is often considered as a substitute for BS 970 (Part 1) 822H17 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.