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BS 970 EN34 vs SAE J404 4617

Strong Match — 88.4% match based on chemical composition and mechanical property overlap.

BS 970 EN34 (BS 970:1955) and SAE J404 4617 (SAE J404:2000) are both steel grades. Both fall under the Alloy Steel category. BS 970 EN34 is typically used for bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. suitable for tensile strength of 45 tons/sq in min., while SAE J404 4617 is commonly used for chemistry-only alloy steel grade; see the composition notes for product scope. BS 970 EN34 is defined under British Standards (BS), originating from United Kingdom, while SAE J404 4617 is defined under SAE International, originating from United States.

As per chemical composition, BS 970 EN34 vs SAE J404 4617 is a 88.4% 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 88.4%.

Frequently Compared With BS 970 EN34:
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
88.4%
MECHANICAL MATCH
No shared data
OVERALL
88.4%
Specifications
Property BS 970 EN34 SAE J404 4617
Standard BS 970:1955 SAE J404:2000
Category Alloy Steel Alloy Steel
C (%) 0.14-0.20 0.16-0.21
Si (%) 0.10-0.35 0.15-0.35
Mn (%) 0.30-0.60 0.40-0.65
Ni (%) 1.50-2.00 1.65-2.00
Mo (%) 0.20-0.30 0.20-0.30
S (%) <=0.050 <=0.040
P (%) <=0.050 <=0.030
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 EN34 SAE J404 4617
Tensile Strength ≥695 MPa (45 tons/sq in, converted) Not specified
Elongation ≥18% Not specified
Condition Core, after heat treatment (lowest-strength condition of the standard) Not specified
Typical Applications
BS 970 EN34
Bars and billets for forging; forgings and drop-forgings; bars for machining; bright bars. Suitable for tensile strength of 45 tons/sq in min.
SAE J404 4617
Chemistry-only alloy steel grade; see the composition notes for product scope
Can BS 970 EN34 Be Substituted With SAE J404 4617?
BS 970 EN34 and SAE J404 4617 overlap closely enough on chemistry and mechanical properties that SAE J404 4617 is often considered as a substitute for BS 970 EN34 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 EN34
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SAE J404 4617
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Frequently Asked Questions
What is the difference between BS 970 EN34 and SAE J404 4617?
Both grades share a similar composition profile; see the specification table above for the exact chemistry and mechanical property values.
Can BS 970 EN34 be substituted with SAE J404 4617?
BS 970 EN34 and SAE J404 4617 overlap closely enough on chemistry and mechanical properties that SAE J404 4617 is often considered as a substitute for BS 970 EN34 in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.