35CRMOA

2 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 35CRMOA →

35CrMoA · GB/T 3077-2015

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

Material category: Alloy steel
Subcategory: Alloy structural steel
Material form: Reference record
Original record status: Original standard verified
Standard edition: GB/T 3077-2015
Table / clause: Tables 1 and 2; A/E designation rules in the endnote to Table 1

Carbon-equivalent reference

IIW / CEV：0.5767–0.8233Known-element contribution; incomplete value; missing V 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）：0.3957–0.5365Known-element contribution; incomplete value; missing V, 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：0.4150–0.5700 Independent-element envelope of standard ranges; not measured heat-analysis values 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.

Composition

Element	Composition requirement
C	0.32 ～ 0.4
Mn	0.4 ～ 0.7
Cr	0.8 ～ 1.1
Mo	0.15 ～ 0.25
Si	0.17 ～ 0.37
P	≤ 0.02 (lower limit not stated)
S	≤ 0.02 (lower limit not stated)
Cu	≤ 0.25 (lower limit not stated)
Ni	≤ 0.3 (lower limit not stated)

Applicability and limitations

GB/T 3077-2015 Table 1 gives ladle analysis; Table 2 gives P/S and residual-element requirements. The final note to Table 1 allows ordering any grade as higher or special quality by adding A or E after the grade; this record is higher-quality steel. For steel used in hot-pressure working, Cu ≤0.20%; the ordinary Cu maximum does not apply to this use. Explicit alloy ranges in Table 1 take priority; for Cr/Ni/Mo not specified there, use the residual limits in Table 2 and do not add residual limits on top of alloying-element ranges. Sn/Sb/As must be analyzed and recorded on the inspection certificate; any needed limits require agreement, and no generic numerical limits are invented here. Product-analysis deviations are handled separately under GB/T 222 and do not directly expand ladle limits. Mechanical properties depend on specimen dimensions and the recommended heat-treatment/delivery condition; this composition review does not constitute verification of properties.

Verification notes

Tables 1/2 and quality-grade rules checked

35CrMoA · BEXG 021-2020

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

Material category: Cold-heading steel
Subcategory: Cold-heading steel
Material form: Wire rod
Original record status: Manufacturer source verified
Document edition: BEXG 021-2020, sixteenth revision stated on the cover; issued and effective on 2020-12-29; The latest original document available on this computer only
Document title: Technical delivery conditions for cold-heading steel wire rod for automotive parts
Table / clause: Table 1
PDF page references: 9
Unit: Mass fraction (wt%)
Manufacturer: Baoshan Iron & Steel Co., Ltd. (Baosteel)

Carbon-equivalent reference

Estimate from manufacturer-published ranges, not a standard guarantee or measured heat result; formula applicability requires review against the application and process.

IIW / CEV：0.6400–0.8567Known-element contribution; incomplete value; missing V 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）：0.4200–0.5300Known-element contribution; incomplete value; missing V, 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：0.4500–0.5750 Envelope of independent element limits from manufacturer data; neither standard guarantee values nor measured heat results 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.

Composition

Element	Composition requirement
C	0.33 ～ 0.38
Si	0.15 ～ 0.35
Mn	0.6 ～ 0.9
P	≤ 0.02 (lower limit not stated)
S	≤ 0.02 (lower limit not stated)
Cr	0.9 ～ 1.2
Mo	0.15 ～ 0.3
Ni	≤ 0.2 (lower limit not stated)
Cu	≤ 0.2 (lower limit not stated)

Applicability and limitations

Baosteel BEXG 021-2020, Table 1, row 83, PDF page 9; heat-analysis composition in wt%, hot-rolled wire rod. 2020 is the original edition available locally, with no claim that it is the company’s current latest edition. Special conditions and actual supply require separate confirmation.

Composition conditions

Table 1 and its continuation give heat composition, in mass fractions wt%; The product is hot-rolled wire rod for automotive parts.
Unless expressly stated otherwise, residual Cr≤0.20%, Ni≤0.20%, Cu≤0.20% and Mo≤0.06% apply; Specific requirements in the table and additional notes take precedence.
A dash does not mean zero; Composition outside the table is not inferred from grade names or referenced standards.

Verification notes

Table 1 original images checked page by page, physical pages 3–10; continuation values and other columns kept separate; two disputed rows excluded.

Source footnotes

Mo:0.15-0.30. Note: composition is the same as SCM435 in BQB517View associated products →