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GB/T 1299 9CrWMn vs GB/T 1299 4Cr5MoSiV1

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

GB/T 1299 9CrWMn (GB/T 1299-2014) and GB/T 1299 4Cr5MoSiV1 (GB/T 1299-2014) are both steel grades. Both fall under the Tool & Die Steels category. GB/T 1299 9CrWMn is typically used for used for gauges, reamers, punches, dies, measuring tools, and cold cutting blades., while GB/T 1299 4Cr5MoSiV1 is commonly used for die casting dies, forging dies, extrusion tools. GB/T 1299 9CrWMn is defined under Guobiao Standards (GB/T), originating from China, while GB/T 1299 4Cr5MoSiV1 is defined under Guobiao Standards (GB/T), originating from China.

As per chemical composition, GB/T 1299 9CrWMn vs GB/T 1299 4Cr5MoSiV1 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 GB/T 1299 9CrWMn:
EN ISO 683-17 100Cr6 DIN EN ISO 4957 1.2344 EN ISO 4957 1.2316 GOST 5950 3H2W8F GB/T 1299 3Cr2W8V AISI 52100 GOST 5950 4H5MFS GOST 5950 4H5MFS1 DIN EN ISO 4957 1.2379 GB/T 1299 4Cr5MoSiV IS 1570 (Part 6) 103T3
Other Tool & Die Steels Grades to Compare With GB/T 1299 9CrWMn:
IS 3748 103T3
Match Breakdown
CHEMISTRY MATCH
49.2%
MECHANICAL MATCH
0%
OVERALL
32.8%
Specifications
Property GB/T 1299 9CrWMn GB/T 1299 4Cr5MoSiV1
Standard GB/T 1299-2014 GB/T 1299-2014
Category Tool & Die Steels Tool & Die Steels
C (%) 0.85-0.95 0.32–0.45
Si (%) 0.10-0.40 0.80–1.20
Mn (%) 0.90-1.20 0.20–0.50
Cr (%) 0.50-0.80 4.75–5.50
W (%) 0.50-0.80 Not specified
P (%) 0.030 max Not specified
S (%) 0.030 max Not specified
Mo (%) Not specified 1.20–1.75
V (%) Not specified 0.80–1.20
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 9CrWMn GB/T 1299 4Cr5MoSiV1
Tensile Strength 850-1050 MPa Not specified
Yield Strength 650-850 MPa Not specified
Elongation 8-12% Not specified
Hardness 58-64 HRC Not specified
Hardness HRC (hardened) Not specified 42–54
Hardness HB (annealed) Not specified ≤235
Typical Applications
GB/T 1299 9CrWMn
Used for gauges, reamers, punches, dies, measuring tools, and cold cutting blades.
GB/T 1299 4Cr5MoSiV1
Die casting dies, forging dies, extrusion tools
Key Differences
Can GB/T 1299 9CrWMn Be Substituted With GB/T 1299 4Cr5MoSiV1?
GB/T 1299 9CrWMn and GB/T 1299 4Cr5MoSiV1 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
GB/T 1299 9CrWMn
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2600–3000 mm (102.36–118.11 in)
GB/T 1299 4Cr5MoSiV1
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 2700–4100 mm (106.3–161.42 in)
On M-EX Right Now
GB/T 1299 9CrWMn
2 active listings and RFQs →
GB/T 1299 4Cr5MoSiV1
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 1299 9CrWMn and GB/T 1299 4Cr5MoSiV1?
GB/T 1299 9CrWMn specifies W, P, S which are not specified for GB/T 1299 4Cr5MoSiV1. GB/T 1299 4Cr5MoSiV1 specifies Mo, V which are not specified for GB/T 1299 9CrWMn.
Can GB/T 1299 9CrWMn be substituted with GB/T 1299 4Cr5MoSiV1?
GB/T 1299 9CrWMn and GB/T 1299 4Cr5MoSiV1 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.