1561

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 1561 →

1561 · ASTM A29/A29M-2012

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: Original standard verified
Standard edition: ASTM A29/A29M-2012
Table / clause: Table 1, footnotes A–G
PDF page references: 1、3、4

Carbon-equivalent reference

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

Si not otherwise specified in the order; Table 1 does not specify Si, which is not treated as zero

IIW / CEV：0.6750–0.8250 Known-item contribution, not a complete value; missing Cr, Mo, V, 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）：0.5875–0.7025Known-element contribution; incomplete value; missing Si, Cu, Cr, Ni, Mo, 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：0.6250–0.7550 Known-item contribution, not a complete value; missing Mo, Cr, 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.

Order explicitly adopts Si ≤0.1% under note B

Pcm（Ito–Bessyo）：0.5875–0.7058 Known-item contribution, not a complete value; missing Cu, Cr, Ni, Mo, 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%.

Order explicitly adopts Si 0.1–0.2% under note B

Pcm（Ito–Bessyo）：0.5908–0.7092 Known-item contribution, not a complete value; missing Cu, Cr, Ni, Mo, 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%.

Order explicitly adopts Si 0.15–0.35% under note B

Pcm（Ito–Bessyo）：0.5925–0.7142 Known-item contribution, not a complete value; missing Cu, Cr, Ni, Mo, 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%.

Order explicitly adopts Si 0.2–0.4% under note B

Pcm（Ito–Bessyo）：0.5942–0.7158 Known-item contribution, not a complete value; missing Cu, Cr, Ni, Mo, 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%.

Order explicitly adopts Si 0.3–0.6% under note B

Pcm（Ito–Bessyo）：0.5975–0.7225 Known-item contribution, not a complete value; missing Cu, Cr, Ni, Mo, 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%.

Si not otherwise specified in the order; Table 1 does not specify Si, which is not treated as zero；order explicitly specifies Cu≥0.20% under note C

IIW / CEV：≥ 0.6883Known-element contribution; incomplete value; missing Cr, Mo, V, Ni; Cu has no specified upper limit; the carbon-equivalent upper bound cannot be determined 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）：≥ 0.5975Known-element contribution; incomplete value; missing Si, Cr, Ni, Mo, V, B; Cu has no specified upper limit; the carbon-equivalent upper bound cannot be determined 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：≥ 0.6350Known-element contribution; incomplete value; missing Mo, Cr, Ni; Cu has no specified upper limit; the carbon-equivalent upper bound cannot be determined 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.

Order explicitly adopts Si ≤0.1% under note B；order explicitly specifies Cu≥0.20% under note C

Pcm（Ito–Bessyo）：≥ 0.5975Known-element contribution; incomplete value; missing Cr, Ni, Mo, V, B; Cu has no specified upper limit; the carbon-equivalent upper bound cannot be determined 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%.

Order explicitly adopts Si 0.1–0.2% under note B；order explicitly specifies Cu≥0.20% under note C

Pcm（Ito–Bessyo）：≥ 0.6008Known-element contribution; incomplete value; missing Cr, Ni, Mo, V, B; Cu has no specified upper limit; the carbon-equivalent upper bound cannot be determined 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%.

Order explicitly adopts Si 0.15–0.35% under note B；order explicitly specifies Cu≥0.20% under note C

Pcm（Ito–Bessyo）：≥ 0.6025Known-element contribution; incomplete value; missing Cr, Ni, Mo, V, B; Cu has no specified upper limit; the carbon-equivalent upper bound cannot be determined 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%.

Order explicitly adopts Si 0.2–0.4% under note B；order explicitly specifies Cu≥0.20% under note C

Pcm（Ito–Bessyo）：≥ 0.6042Known-element contribution; incomplete value; missing Cr, Ni, Mo, V, B; Cu has no specified upper limit; the carbon-equivalent upper bound cannot be determined 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%.

Order explicitly adopts Si 0.3–0.6% under note B；order explicitly specifies Cu≥0.20% under note C

Pcm（Ito–Bessyo）：≥ 0.6075Known-element contribution; incomplete value; missing Cr, Ni, Mo, V, B; Cu has no specified upper limit; the carbon-equivalent upper bound cannot be determined 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	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)

Applicability and limitations

Original 2012, Table 1: heat-analysis mass fractions wt%. Product-analysis applicability and tolerances require separate confirmation under 4.3 and Table 5. Grades and product forms are retained as tabulated in this standard; cold-heading suitability is not established. The Si in note B is an order-specified option. If not specified, it remains unknown and is not entered as zero. Note C applies Cu≥0.20% only when required by the order; no upper limit is invented, and Cu is not automatically added to ordinary orders. Note D applies Pb0.15–0.35% only to expressly leaded L grades. Ordinary grades without L do not automatically include Pb. Under note F, addition of Bi/Ca/Se/Te is agreed between purchaser and supplier; an unspecified value is not entered as zero. Note E gives an expected boron content under specified treatment conditions; it is not a universal B limit for all ordinary grades. The original table gives Former Designation: 1061. These are historical search aliases only; records from different standards are not merged.

Original condition-branch records

Si not otherwise specified in the order; Table 1 does not specify Si, which is not treated as zero

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)

Order explicitly adopts Si ≤0.1% under note B

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Si	≤ 0.1 (lower limit not stated)

Order explicitly adopts Si 0.1–0.2% under note B

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Si	0.1 ～ 0.2

Order explicitly adopts Si 0.15–0.35% under note B

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Si	0.15 ～ 0.35

Order explicitly adopts Si 0.2–0.4% under note B

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Si	0.2 ～ 0.4

Order explicitly adopts Si 0.3–0.6% under note B

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Si	0.3 ～ 0.6

Si not otherwise specified in the order; Table 1 does not specify Si, which is not treated as zero；order explicitly specifies Cu≥0.20% under note C

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Cu	≥ 0.2 (upper limit not stated)

Order explicitly adopts Si ≤0.1% under note B；order explicitly specifies Cu≥0.20% under note C

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Si	≤ 0.1 (lower limit not stated)
Cu	≥ 0.2 (upper limit not stated)

Order explicitly adopts Si 0.1–0.2% under note B；order explicitly specifies Cu≥0.20% under note C

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Si	0.1 ～ 0.2
Cu	≥ 0.2 (upper limit not stated)

Order explicitly adopts Si 0.15–0.35% under note B；order explicitly specifies Cu≥0.20% under note C

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Si	0.15 ～ 0.35
Cu	≥ 0.2 (upper limit not stated)

Order explicitly adopts Si 0.2–0.4% under note B；order explicitly specifies Cu≥0.20% under note C

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Si	0.2 ～ 0.4
Cu	≥ 0.2 (upper limit not stated)

Order explicitly adopts Si 0.3–0.6% under note B；order explicitly specifies Cu≥0.20% under note C

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Si	0.3 ～ 0.6
Cu	≥ 0.2 (upper limit not stated)

A condition branch must be selected

Yes

Verification notes

The 2012 Table 1 and footnotes have been checked; order-specific optional compositions and base-table limits remain separate.

1561 · ASTM A29/A29M-2023

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: Original standard verified
Standard edition: ASTM A29/A29M-2023
Table / clause: Table 1, footnotes A–G
PDF page references: 5
Unit: Mass fraction (wt%)
Analysis type: Heat analysis (composition ranges and limits in the original table)

Carbon-equivalent reference

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

Si not otherwise specified in the order; Table 1 does not specify Si, which is not treated as zero

Order explicitly adopts Si ≤0.1% under Table 1 note B

Order explicitly adopts Si 0.1–0.2% under Table 1 note B

Order explicitly adopts Si 0.15–0.35% under Table 1 note B

Order explicitly adopts Si 0.2–0.4% under Table 1 note B

Order explicitly adopts Si 0.3–0.6% under Table 1 note B

Si not otherwise specified in the order; Table 1 does not specify Si, which is not treated as zero；order explicitly specifies Cu≥0.20% under note C

Order explicitly adopts Si ≤0.1% under Table 1 note B；order explicitly specifies Cu≥0.20% under note C

Order explicitly adopts Si 0.1–0.2% under Table 1 note B；order explicitly specifies Cu≥0.20% under note C

Order explicitly adopts Si 0.15–0.35% under Table 1 note B；order explicitly specifies Cu≥0.20% under note C

Order explicitly adopts Si 0.2–0.4% under Table 1 note B；order explicitly specifies Cu≥0.20% under note C

Order explicitly adopts Si 0.3–0.6% under Table 1 note B；order explicitly specifies Cu≥0.20% under note C

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

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)

Applicability and limitations

Original ASTM A29/A29M-2023, Table 1: the basic table gives heat-analysis mass fractions wt%. Product-analysis tolerances require separate confirmation under 4.3 and Table 5 and are not added to heat-analysis limits. When 4.1.1 is ordered by a grade in this table, the corresponding heat-analysis limits must be met. Other ordered compositions require separate agreement under 4.1.2 and Table 3/4 and are not merged into this table. These are general requirements for hot-worked bars; chemistry alone does not establish cold-heading suitability, supply or mechanical properties. The Si ranges in note B are common options when required by the order. No default Si is specified; neither a universal Si range nor zero may be assumed. The Cu≥0.20% in note C applies only when expressly required by the order; no upper limit is invented. Under note D, Pb for leaded steel is 0.15–0.35%. The L must be retained as part of grade identity and is not added to ordinary grades. If lead is added in the ladle stream, its cast or heat-analysis content cannot be determined. Note F: Bi/Ca/Se/Te is specified by purchaser-supplier agreement; unspecified values are not entered as zero. Note E gives expected B 0.0005–0.003% only for specified boron treatment of killed steel. Where the usual Ti addition is not permitted, up to 0.005% may be expected. These are not mandatory B limits for all ordinary grades. Original table designations Former Designation 1061 are historical search aliases only; records from different standards are not merged.

Original condition-branch records

Si not otherwise specified in the order; Table 1 does not specify Si, which is not treated as zero

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)

Order explicitly adopts Si ≤0.1% under Table 1 note B

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Si	≤ 0.1 (lower limit not stated)

Order explicitly adopts Si 0.1–0.2% under Table 1 note B

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Si	0.1 ～ 0.2

Order explicitly adopts Si 0.15–0.35% under Table 1 note B

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Si	0.15 ～ 0.35

Order explicitly adopts Si 0.2–0.4% under Table 1 note B

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Si	0.2 ～ 0.4

Order explicitly adopts Si 0.3–0.6% under Table 1 note B

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Si	0.3 ～ 0.6

Si not otherwise specified in the order; Table 1 does not specify Si, which is not treated as zero；order explicitly specifies Cu≥0.20% under note C

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Cu	≥ 0.2 (upper limit not stated)

Order explicitly adopts Si ≤0.1% under Table 1 note B；order explicitly specifies Cu≥0.20% under note C

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Si	≤ 0.1 (lower limit not stated)
Cu	≥ 0.2 (upper limit not stated)

Order explicitly adopts Si 0.1–0.2% under Table 1 note B；order explicitly specifies Cu≥0.20% under note C

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Si	0.1 ～ 0.2
Cu	≥ 0.2 (upper limit not stated)

Order explicitly adopts Si 0.15–0.35% under Table 1 note B；order explicitly specifies Cu≥0.20% under note C

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Si	0.15 ～ 0.35
Cu	≥ 0.2 (upper limit not stated)

Order explicitly adopts Si 0.2–0.4% under Table 1 note B；order explicitly specifies Cu≥0.20% under note C

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Si	0.2 ～ 0.4
Cu	≥ 0.2 (upper limit not stated)

Order explicitly adopts Si 0.3–0.6% under Table 1 note B；order explicitly specifies Cu≥0.20% under note C

Element	Composition requirement
C	0.55 ～ 0.65
Mn	0.75 ～ 1.05
P	≤ 0.04 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)
Si	0.3 ～ 0.6
Cu	≥ 0.2 (upper limit not stated)

A condition branch must be selected

Yes

Verification notes

Existing OCR of the four-page, 190-row original 2023 table was parsed cell by cell. All values were screened for differences against independent 2012 data and checked against the original 2023 images and footnotes; no values were filled from the older edition.