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ASTM A681 A9 vs EN 10083-1 34CrNiMo6

Related Material — 65% match based on chemical composition and mechanical property overlap.

ASTM A681 A9 (ASTM A681:2008) and EN 10083-1 34CrNiMo6 (EN 10083-1:1991) are both steel grades. ASTM A681 A9 is classified under Tool & Die Steels, while EN 10083-1 34CrNiMo6 is classified under Alloy Steel — a different category, which is worth noting alongside the chemistry match below. ASTM A681 A9 is typically used for tools, dies and fixtures (clause 1.2), while EN 10083-1 34CrNiMo6 is commonly used for quenched and tempered machine parts; non alloy steels also normalized (clause 1). ASTM A681 A9 is defined under ASTM International, originating from United States, while EN 10083-1 34CrNiMo6 is defined under European Standard (EN), originating from Europe.

As per chemical composition, ASTM A681 A9 vs EN 10083-1 34CrNiMo6 is a 57.1% match. As per mechanical properties, the match is 100%. Combined, this makes them a related material overall at 65%.

Frequently Compared With ASTM A681 A9:
EN ISO 4957 1.2316 DIN EN ISO 4957 1.2379 EN ISO 683-17 100Cr6 IS 1570 (Part 6) 103T3 IS 1570 (Part 6) 133T3 GB/T 1299 4Cr5MoSiV GB/T 1299 4Cr5MoSiV1 DIN EN ISO 4957 1.2344 GB/T 1299 3Cr2W8V GOST 5950 3H2W8F GOST 5950 4H5MFS GOST 5950 4H5MFS1
Match Breakdown
CHEMISTRY MATCH
57.1%
MECHANICAL MATCH
100%
OVERALL
65%
Specifications
Property ASTM A681 A9 EN 10083-1 34CrNiMo6
Standard ASTM A681:2008 EN 10083-1:1991
Category Tool & Die Steels Alloy Steel
C (%) 0.45-0.55 0.30-0.38
Mn (%) 0.20-0.50 0.50-0.80
P (%) <=0.030 <=0.035
S (%) <=0.030 <=0.035
Si (%) 0.95-1.15 <=0.40
Cr (%) 4.75-5.50 1.30-1.70
V (%) 0.80-1.40 Not specified
Mo (%) 1.30-1.80 0.15-0.30
Ni (%) 1.25-1.75 1.30-1.70
Matched by chemical composition and mechanical properties, not a formal equivalence claim. Always verify against the applicable standard before substitution.
Mechanical Properties
Property ASTM A681 A9 EN 10083-1 34CrNiMo6
Hardness <=248 HB Soft annealed: 248 HB max
Condition Annealed (maximum Brinell hardness) Quenched and tempered, ruling section d <= 16 mm
Elongation Not specified 9% min
Tensile Strength Not specified 1200 to 1400 MPa
Yield Strength Not specified 1000 MPa min
Typical Applications
ASTM A681 A9
Tools, dies and fixtures (clause 1.2)
EN 10083-1 34CrNiMo6
Quenched and tempered machine parts; non alloy steels also normalized (clause 1)
Key Differences
Can ASTM A681 A9 Be Substituted With EN 10083-1 34CrNiMo6?
ASTM A681 A9 and EN 10083-1 34CrNiMo6 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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ASTM A681 A9
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Frequently Asked Questions
What is the difference between ASTM A681 A9 and EN 10083-1 34CrNiMo6?
Different category: ASTM A681 A9 is Tool & Die Steels, EN 10083-1 34CrNiMo6 is Alloy Steel. ASTM A681 A9 specifies V which is not specified for EN 10083-1 34CrNiMo6.
Can ASTM A681 A9 be substituted with EN 10083-1 34CrNiMo6?
ASTM A681 A9 and EN 10083-1 34CrNiMo6 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.