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GB/T 1299 4Cr5MoSiV vs ASTM A681 H11

Strong Match — 96% match based on chemical composition and mechanical property overlap.

GB/T 1299 4Cr5MoSiV (GB/T 1299-2014) and ASTM A681 H11 (ASTM A681:2008) are both steel grades. Both fall under the Tool & Die Steels category. GB/T 1299 4Cr5MoSiV is typically used for die casting dies, extrusion tooling, while ASTM A681 H11 is commonly used for die casting dies, extrusion tooling, forging dies. GB/T 1299 4Cr5MoSiV is defined under Guobiao Standards (GB/T), originating from China, while ASTM A681 H11 is defined under ASTM International, originating from United States.

As per chemical composition, GB/T 1299 4Cr5MoSiV vs ASTM A681 H11 is a 94% match. As per mechanical properties, the match is 100%. Combined, this makes them a strong match overall at 96%.

Frequently Compared With GB/T 1299 4Cr5MoSiV:
EN ISO 683-17 100Cr6 GB/T 1299 4Cr5MoSiV1 DIN EN ISO 4957 1.2344 GB/T 1299 3Cr2W8V GOST 5950 3H2W8F DIN EN ISO 4957 1.2379 EN ISO 4957 1.2316 GOST 5950 4H5MFS GOST 5950 4H5MFS1 AISI 52100 IS 1570 (Part 6) 70T3 IS 1570 (Part 6) 133T3
Match Breakdown
CHEMISTRY MATCH
94%
MECHANICAL MATCH
100%
OVERALL
96%
Specifications
Property GB/T 1299 4Cr5MoSiV ASTM A681 H11
Standard GB/T 1299-2014 ASTM A681:2008
Category Tool & Die Steels Tool & Die Steels
C (%) 0.32–0.45 0.33-0.43
Si (%) 0.80–1.20 0.80-1.25
Mn (%) 0.20–0.50 0.20-0.60
Cr (%) 4.75–5.50 4.75-5.50
Mo (%) 1.10–1.60 1.10-1.60
V (%) 0.30–0.60 0.30-0.60
P (%) Not specified <=0.030
S (%) Not specified <=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 GB/T 1299 4Cr5MoSiV ASTM A681 H11
Hardness HRC (hardened) 40–54 Not specified
Hardness HB (annealed) ≤235 Not specified
Hardness Not specified <=235 HB
Condition Not specified Annealed (maximum Brinell hardness)
Typical Applications
GB/T 1299 4Cr5MoSiV
Die casting dies, extrusion tooling
ASTM A681 H11
Die casting dies, extrusion tooling, forging dies
Key Differences
Can GB/T 1299 4Cr5MoSiV Be Substituted With ASTM A681 H11?
GB/T 1299 4Cr5MoSiV and ASTM A681 H11 overlap closely enough on chemistry and mechanical properties that ASTM A681 H11 is often considered as a substitute for GB/T 1299 4Cr5MoSiV in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.
Forms & Sizes Available on M-EX
GB/T 1299 4Cr5MoSiV
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2500–2700 mm (98.43–106.3 in)
ASTM A681 H11
Flat Bar → (3 listings)
Thickness: 40–40 mm (1.57–1.57 in)
Width: 180–180 mm (7.09–7.09 in)
Length: 2500–4000 mm (98.43–157.48 in)
On M-EX Right Now
GB/T 1299 4Cr5MoSiV
2 active listings and RFQs →
ASTM A681 H11
3 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 1299 4Cr5MoSiV and ASTM A681 H11?
ASTM A681 H11 specifies P, S which are not specified for GB/T 1299 4Cr5MoSiV.
Can GB/T 1299 4Cr5MoSiV be substituted with ASTM A681 H11?
GB/T 1299 4Cr5MoSiV and ASTM A681 H11 overlap closely enough on chemistry and mechanical properties that ASTM A681 H11 is often considered as a substitute for GB/T 1299 4Cr5MoSiV in many applications. Always confirm the specific property range your application needs before substituting, and check with your supplier's mill certificate.