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GB/T 1299 9CrWMn vs GOST 5950 4H5MFS1

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

GB/T 1299 9CrWMn (GB/T 1299-2014) and GOST 5950 4H5MFS1 (GOST 5950-2000) 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 GOST 5950 4H5MFS1 is commonly used for used for forging dies, pressure casting dies, hot punches, extrusion tooling, and die inserts.. GB/T 1299 9CrWMn is defined under Guobiao Standards (GB/T) (China).

As per chemical composition, GB/T 1299 9CrWMn vs GOST 5950 4H5MFS1 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 GB/T 1299 4Cr5MoSiV1 EN ISO 4957 1.2316 GOST 5950 3H2W8F GB/T 1299 3Cr2W8V AISI 52100 GOST 5950 4H5MFS DIN EN ISO 4957 1.2379 GB/T 1299 4Cr5MoSiV
Other Tool & Die Steels Grades to Compare With GB/T 1299 9CrWMn:
IS 3748 103T3 IS 1570 (Part 6) 103T3
Match Breakdown
CHEMISTRY MATCH
49.2%
MECHANICAL MATCH
0%
OVERALL
32.8%
Specifications
Property GB/T 1299 9CrWMn GOST 5950 4H5MFS1
Standard GB/T 1299-2014 GOST 5950-2000
Category Tool & Die Steels Tool & Die Steels
C (%) 0.85-0.95 0.35-0.45
Si (%) 0.10-0.40 0.8-1.2
Mn (%) 0.90-1.20 Not specified
Cr (%) 0.50-0.80 4.5-5.5
W (%) 0.50-0.80 Not specified
P (%) 0.030 max Not specified
S (%) 0.030 max Not specified
Mo (%) Not specified 1.2-1.6
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 GB/T 1299 9CrWMn GOST 5950 4H5MFS1
Tensile Strength 850-1050 MPa 1350-1650 MPa
Yield Strength 650-850 MPa 1150 MPa min
Elongation 8-12% 9% min
Hardness 58-64 HRC 44-50 HRC
Typical Applications
GB/T 1299 9CrWMn
Used for gauges, reamers, punches, dies, measuring tools, and cold cutting blades.
GOST 5950 4H5MFS1
Used for forging dies, pressure casting dies, hot punches, extrusion tooling, and die inserts.
Key Differences
Can GB/T 1299 9CrWMn Be Substituted With GOST 5950 4H5MFS1?
GB/T 1299 9CrWMn and GOST 5950 4H5MFS1 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)
GOST 5950 4H5MFS1
Round Bar → (2 listings)
Diameter: 80–80 mm (3.15–3.15 in)
Length: 3000–3100 mm (118.11–122.05 in)
On M-EX Right Now
GB/T 1299 9CrWMn
2 active listings and RFQs →
GOST 5950 4H5MFS1
2 active listings and RFQs →
Frequently Asked Questions
What is the difference between GB/T 1299 9CrWMn and GOST 5950 4H5MFS1?
GB/T 1299 9CrWMn specifies Mn, W, P, S which are not specified for GOST 5950 4H5MFS1. GOST 5950 4H5MFS1 specifies Mo, V which are not specified for GB/T 1299 9CrWMn.
Can GB/T 1299 9CrWMn be substituted with GOST 5950 4H5MFS1?
GB/T 1299 9CrWMn and GOST 5950 4H5MFS1 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.