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BS 970 EN20A vs BS 970 (Part 3) 722M24

Related Material — 69.9% match based on chemical composition and mechanical property overlap.

BS 970 EN20A (BS 970:1955) and BS 970 (Part 3) 722M24 (BS 970 (Part 3):1991) are both steel grades. Both fall under the Alloy Steel category. BS 970 EN20A is typically used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. suitable for 55/65 (t), 60/70 (u), 65/75 (v) tons/sq in according to ruling section. en 20b same title., while BS 970 (Part 3) 722M24 is commonly used for bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy direct hardening steel (table 16). BS 970 EN20A is defined under British Standards (BS), originating from United Kingdom, while BS 970 (Part 3) 722M24 is defined under British Standards (BS), originating from United Kingdom.

As per chemical composition, BS 970 EN20A vs BS 970 (Part 3) 722M24 is a 81.5% 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 69.9%.

Frequently Compared With BS 970 EN20A:
IS 1570 (Part 4) 07Cr4Mo6 NF A35-565 100C6 UNI 11234 100Cr6 IS 1570 (Part 7) 10Cr36Mo10H IS 1570 (Part 7) 10Mo6H IS 4367 07Cr4Mo6 IS 1570 (Part 4) 103Cr4 IS 1570 (Part 4) 103Cr6 IS 1570 (Part 4) 105Cr5 IS 1570 (Part 4) 10Cr20Mo6 IS 4367 10Cr9Mo10 IS 1570 (Part 4) 10Mo6
Match Breakdown
CHEMISTRY MATCH
81.5%
MECHANICAL MATCH
No shared data
OVERALL
69.9%
Specifications
Property BS 970 EN20A BS 970 (Part 3) 722M24
Standard BS 970:1955 BS 970 (Part 3):1991
Category Alloy Steel Alloy Steel
C (%) 0.20-0.30 0.20-0.28
Si (%) 0.10-0.35 0.10-0.40
Mn (%) 0.40-0.70 0.45-0.70
Cr (%) 0.50-1.00 3.00-3.50
Mo (%) 0.50-0.80 0.45-0.65
S (%) <=0.050 <=0.040
P (%) <=0.050 <=0.035
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 EN20A BS 970 (Part 3) 722M24
Tensile Strength ≥849 MPa (55 tons/sq in, converted) Not specified
Yield Strength ≥680 MPa (44 tons/sq in, converted) Not specified
Elongation ≥18% Not specified
Hardness 248-302 HB Not specified
Condition Hardened and tempered T, ruling section 2 1/2 in (lowest-strength condition of the standard) Not specified
Typical Applications
BS 970 EN20A
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Suitable for 55/65 (T), 60/70 (U), 65/75 (V) tons/sq in according to ruling section. En 20B same title.
BS 970 (Part 3) 722M24
Bright cold finished bars (cold drawn, turned or precision ground) for general engineering purposes, in straight lengths; alloy direct hardening steel (Table 16)
Can BS 970 EN20A Be Substituted With BS 970 (Part 3) 722M24?
BS 970 EN20A and BS 970 (Part 3) 722M24 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 EN20A
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BS 970 (Part 3) 722M24
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Frequently Asked Questions
What is the difference between BS 970 EN20A and BS 970 (Part 3) 722M24?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN20A be substituted with BS 970 (Part 3) 722M24?
BS 970 EN20A and BS 970 (Part 3) 722M24 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.