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ASTM A681 A4 vs EN 10083-3 42CrMo4

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

ASTM A681 A4 (ASTM A681:2008) and EN 10083-3 42CrMo4 (EN 10083-3:2006) are both steel grades. ASTM A681 A4 is classified under Tool & Die Steels, while EN 10083-3 42CrMo4 is classified under Alloy Steel — a different category, which is worth noting alongside the chemistry match below. ASTM A681 A4 is typically used for tools, dies and fixtures (clause 1.2), while EN 10083-3 42CrMo4 is commonly used for high strength bolts, crankshafts, axles. ASTM A681 A4 is defined under ASTM International, originating from United States, while EN 10083-3 42CrMo4 is defined under European Standard (EN), originating from Europe.

As per chemical composition, ASTM A681 A4 vs EN 10083-3 42CrMo4 is a 68.2% match. As per mechanical properties, the match is 100%. Combined, this makes them a related material overall at 65%.

Frequently Compared With ASTM A681 A4:
GB/T 1299 3Cr2W8V DIN EN ISO 4957 1.2344 GB/T 1299 4Cr5MoSiV GB/T 1299 4Cr5MoSiV1 EN ISO 683-17 100Cr6 IS 1570 (Part 6) 103T3 IS 1570 (Part 6) 133T3 GOST 5950 4H5MFS DIN EN ISO 4957 1.2379 GOST 5950 3H2W8F EN ISO 4957 1.2316 IS 1570 (Part 6) 118T3
Match Breakdown
CHEMISTRY MATCH
68.2%
MECHANICAL MATCH
100%
OVERALL
65%
Specifications
Property ASTM A681 A4 EN 10083-3 42CrMo4
Standard ASTM A681:2008 EN 10083-3:2006
Category Tool & Die Steels Alloy Steel
C (%) 0.95-1.05 0.38-0.45
Mn (%) 1.80-2.20 0.60-0.90
P (%) <=0.030 <=0.025
S (%) <=0.030 <=0.035
Si (%) 0.10-0.70 <=0.40
Cr (%) 0.90-2.20 0.90-1.20
Mo (%) 0.90-1.40 0.15-0.30
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 A4 EN 10083-3 42CrMo4
Hardness <=241 HB Soft annealed (+A): 241 HBW max
Condition Annealed (maximum Brinell hardness) Quenched and tempered (+QT), ruling section d <= 16 mm
Elongation Not specified 10% min
Tensile Strength Not specified 1100 to 1300 MPa
Yield Strength Not specified 900 MPa min
Typical Applications
ASTM A681 A4
Tools, dies and fixtures (clause 1.2)
EN 10083-3 42CrMo4
High strength bolts, crankshafts, axles
Key Differences
Can ASTM A681 A4 Be Substituted With EN 10083-3 42CrMo4?
ASTM A681 A4 and EN 10083-3 42CrMo4 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.
Forms & Sizes Available on M-EX
ASTM A681 A4
No active listings currently.
EN 10083-3 42CrMo4
Round Bar → (26 listings)
Diameter: 40–75 mm (1.57–2.95 in)
Length: 4300–7000 mm (169.29–275.59 in)
Forging → (7 listings)
Diameter: 180–200 mm (7.09–7.87 in)
Length: 500–2100 mm (19.69–82.68 in)
Flat Bar → (6 listings)
Thickness: 40–40 mm (1.57–1.57 in)
Width: 150–200 mm (5.91–7.87 in)
Length: 2500–3400 mm (98.43–133.86 in)
Hex Bar → (4 listings)
Across Flats: 50–50 mm (1.97–1.97 in)
Length: 2500–6500 mm (98.43–255.91 in)
On M-EX Right Now
ASTM A681 A4
0 active listings and RFQs →
EN 10083-3 42CrMo4
43 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A681 A4 and EN 10083-3 42CrMo4?
Different category: ASTM A681 A4 is Tool & Die Steels, EN 10083-3 42CrMo4 is Alloy Steel.
Can ASTM A681 A4 be substituted with EN 10083-3 42CrMo4?
ASTM A681 A4 and EN 10083-3 42CrMo4 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.