G10301

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 G10301 →

G10301 · SAE J403-2014

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

Material category: Carbon steel
Subcategory: Carbon steel
Material form: Reference record
Original record status: Reference data; original source not verified
Standard edition: SAE J403-2014
Table / clause: Table 1

Carbon-equivalent reference

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

Flat products, within the scope of Table 1/2 and note 1

IIW / CEV：0.3800–0.5820Known-element contribution; incomplete value; missing V; ordering or conditional requirements remain unresolved 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）：0.3125–0.4357Known-element contribution; incomplete value; missing Si, V; ordering or conditional requirements remain unresolved 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：0.3400–0.4698 Independent-element envelope of standard ranges, not measured heat results; ordering or conditional requirements remain unresolved 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.

Long products, within the scope of Table 1/2 and note 1; The scope of Table 2 is not extended to wire rod on this basis

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

Element	Composition requirement
C	0.28 ～ 0.34
Mn	0.6 ～ 0.9
B	0.0005 ～ 0.003

Applicability and limitations

P and S shall be selected separately according to flat products/long products; Upper limits cannot be combined. ; Si requires agreement at ordering: wire rod options are ≤0.10, 0.07–0.15, 0.10–0.20, 0.15–0.35, 0.20–0.40, 0.30–0.60%.; Other products have the same options as listed, except for 0.07–0.15. Fixed Si shall not be entered if not agreed. ; Residual elements Note 2: A Cu≤0.20/Ni≤0.20/Cr≤0.15/Mo≤0.06; B Cu≤0.35/Ni≤0.25/Cr≤0.20/Mo≤0.06 (default when not otherwise agreed); C Cu≤0.40/Ni≤0.40/Cr≤0.30/Mo≤0.12; Option D has no specified limits, but reporting is required.. Option A applies to flat products in grades ≤1060; other cases require agreement.. ; Note 3: For boron steels, insert B between the second and third positions, and change the last digit of the UNS to 1; B is 0.0005–0.003%.

Original condition-branch records

Flat products, within the scope of Table 1/2 and note 1

Element	Composition requirement
C	0.28 ～ 0.34
Mn	0.6 ～ 0.9
B	0.0005 ～ 0.003
P	≤ 0.03 (lower limit not stated)
S	≤ 0.035 (lower limit not stated)

Long products, within the scope of Table 1/2 and note 1; The scope of Table 2 is not extended to wire rod on this basis

Element	Composition requirement
C	0.28 ～ 0.34
Mn	0.6 ～ 0.9
B	0.0005 ～ 0.003
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)

A condition branch must be selected

Yes

Verification notes

The original standard text has been checked; Select the product form and order options