CW6MO5CR4V2

1 source records. Standards, editions and conditions are presented separately; matching grade names do not establish interchangeability.

Refer to each source for mass fractions and analysis type. Missing values are not treated as 0. Manufacturer typical values, standard guarantees and measured heat results must remain separate. Use the material selector for calculations and condition selection.

Open condition selection, comparison and carbon-equivalent tools for CW6MO5CR4V2 →

CW6Mo5Cr4V2 · GB/T 9943-2025

Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results

Subcategory: High-speed tool steel
Material form: Reference record
Original record status: Original standard verified
Standard edition: GB/T 9943-2025
Table / clause: Table 1 · Notes a/b
PDF page references: 7、8

Carbon-equivalent reference

Estimates are presented separately for each applicable composition condition. Match the actual ordering conditions; ranges must not be combined.

Table 1 heat analysis, excluding electroslag-remelted steel

IIW / CEV：2.9350–3.3667Known-element contribution; incomplete value; missing Ni, Cu CEV = C + Mn/6 + (Cr + Mo + V)/5 + (Ni + Cu)/15; an engineering estimate of welding cold-cracking susceptibility for carbon and low-alloy steels.

Pcm（Ito–Bessyo）：1.5525–1.7567Known-element contribution; incomplete value; missing Cu, Ni, B Pcm = C + Si/30 + (Mn + Cu + Cr)/20 + Ni/60 + Mo/15 + V/10 + 5B; mainly used for low-carbon low-alloy steels, particularly modern low-carbon pipeline steels; more relevant when C is approximately no higher than 0.11%.

CET：1.5350–1.7250Known-element contribution; incomplete value; missing Cu, Ni CET = C + (Mn + Mo)/10 + (Cr + Cu)/20 + Ni/40; used in welding preheat assessment for ferritic steels, subject to the applicability conditions of EN 1011-2.

Table 1, note a: no Si minimum is specified for electroslag-remelted steel

Pcm（Ito–Bessyo）：1.5458–1.7567Known-element contribution; incomplete value; missing Cu, Ni, B Pcm = C + Si/30 + (Mn + Cu + Cr)/20 + Ni/60 + Mo/15 + V/10 + 5B; mainly used for low-carbon low-alloy steels, particularly modern low-carbon pipeline steels; more relevant when C is approximately no higher than 0.11%.

Composition record (conditional branches apply; this is not an unconditional requirement)

Element	Composition requirement
C	0.86 ～ 0.94
Si	0.2 ～ 0.45
Mn	0.15 ～ 0.4
Cr	3.8 ～ 4.5
Mo	4.7 ～ 5.2
V	1.75 ～ 2.1
W	5.9 ～ 6.7
P	≤ 0.03 (lower limit not stated)
S	≤ 0.02 (lower limit not stated)

Applicability and limitations

GB/T9943-2025, Table 1, heat analysis, mass percent. ; Note a: No lower limit for Si in ESR steel; ranges of other elements shall not be changed because of this. ; Note b: Special S requirements may be specified in the contract to improve machining performance; since specific values are not provided, the general special S range shall not be filled in arbitrarily. ; Clause 7.1.2: Product-analysis tolerances are specified in Table 2; the heat-analysis limits have not been automatically expanded.. ; High-speed tool steel standards are not proof of suitability for cold-heading wire; Do not automatically add this to the range of cold-heading products available for supply..

Original condition-branch records

Table 1 heat analysis, excluding electroslag-remelted steel

Element	Composition requirement
C	0.86 ～ 0.94
Si	0.2 ～ 0.45
Mn	0.15 ～ 0.4
Cr	3.8 ～ 4.5
Mo	4.7 ～ 5.2
V	1.75 ～ 2.1
W	5.9 ～ 6.7
P	≤ 0.03 (lower limit not stated)
S	≤ 0.02 (lower limit not stated)

Table 1, note a: no Si minimum is specified for electroslag-remelted steel

Element	Composition requirement
C	0.86 ～ 0.94
Si	≤ 0.45 (lower limit not stated)
Mn	0.15 ～ 0.4
Cr	3.8 ～ 4.5
Mo	4.7 ～ 5.2
V	1.75 ～ 2.1
W	5.9 ～ 6.7
P	≤ 0.03 (lower limit not stated)
S	≤ 0.02 (lower limit not stated)

A condition branch must be selected

Yes

Verification notes

Table 1 and footnotes in PDF7/8 were visually checked