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ASTM A681 O6 vs GOST 5950 3H2W8F

Minimal Match — 32.8% match based on chemical composition and mechanical property overlap.

ASTM A681 O6 (ASTM A681:2008) and GOST 5950 3H2W8F (GOST 5950-2000) are both steel grades. Both fall under the Tool & Die Steels category. ASTM A681 O6 is typically used for tools, dies and fixtures (clause 1.2), while GOST 5950 3H2W8F is commonly used for used for forging dies, extrusion tools, hot punches, mandrels, and die inserts.. ASTM A681 O6 is defined under ASTM International (United States).

As per chemical composition, ASTM A681 O6 vs GOST 5950 3H2W8F is a 49.2% match. As per mechanical properties, the match is 0%. Combined, this makes them a minimal match overall at 32.8%.

Frequently Compared With ASTM A681 O6:
EN ISO 683-17 100Cr6 GB/T 1299 4Cr5MoSiV1 DIN EN ISO 4957 1.2379 IS 1570 (Part 6) 103T3 IS 1570 (Part 6) 118T3 GB/T 1299 4Cr5MoSiV GOST 5950 4H5MFS GOST 5950 4H5MFS1 EN ISO 4957 1.2316 DIN EN ISO 4957 1.2344 IS 1570 (Part 6) 133T3 GB/T 1299 3Cr2W8V
Match Breakdown
CHEMISTRY MATCH
49.2%
MECHANICAL MATCH
0%
OVERALL
32.8%
Specifications
Property ASTM A681 O6 GOST 5950 3H2W8F
Standard ASTM A681:2008 GOST 5950-2000
Category Tool & Die Steels Tool & Die Steels
C (%) 1.25-1.55 0.3-0.4
Mn (%) 0.30-1.10 Not specified
P (%) <=0.030 Not specified
S (%) <=0.030 Not specified
Si (%) 0.55-1.50 0.2-0.5
Cr (%) <=0.30 2.2-2.7
Mo (%) 0.20-0.30 Not specified
W (%) Not specified 7.5-9.0
V (%) Not specified 0.3-0.6
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 O6 GOST 5950 3H2W8F
Hardness <=229 HB 45-50 HRC
Condition Annealed (maximum Brinell hardness) Not specified
Tensile Strength Not specified 1400-1700 MPa
Yield Strength Not specified 1200 MPa min
Elongation Not specified 8% min
Typical Applications
ASTM A681 O6
Tools, dies and fixtures (clause 1.2)
GOST 5950 3H2W8F
Used for forging dies, extrusion tools, hot punches, mandrels, and die inserts.
Key Differences
Can ASTM A681 O6 Be Substituted With GOST 5950 3H2W8F?
ASTM A681 O6 and GOST 5950 3H2W8F 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 O6
No active listings currently.
GOST 5950 3H2W8F
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2800–4300 mm (110.24–169.29 in)
On M-EX Right Now
ASTM A681 O6
0 active listings and RFQs →
GOST 5950 3H2W8F
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between ASTM A681 O6 and GOST 5950 3H2W8F?
ASTM A681 O6 specifies Mn, P, S, Mo which are not specified for GOST 5950 3H2W8F. GOST 5950 3H2W8F specifies W, V which are not specified for ASTM A681 O6.
Can ASTM A681 O6 be substituted with GOST 5950 3H2W8F?
ASTM A681 O6 and GOST 5950 3H2W8F 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.