SS330

4 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 SS330 →

SS330 · JIS G 3101-2024

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

Material category: Carbon steel
Material form: Hot-rolled structural steel
Original record status: Original standard verified
Standard edition: JIS G 3101:2024
Table / clause: Clause 5, Table 2 and table note a; Clause 1 and Clause 4, Table 1
PDF page references: 5、6

Carbon-equivalent reference

IIW / CEV: cannot be calculatedKnown-element contribution; incomplete value; missing C, Mn, 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): cannot be calculatedKnown-element contribution; incomplete value; missing C, Si, Mn, 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: cannot be calculatedKnown-element contribution; incomplete value; missing C, Mn, 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.

Composition

Element	Composition requirement
P	≤ 0.05 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)

Applicability and limitations

Clause 5, Table 2 gives heat-analysis mass percentages; Table note a permits addition as needed of elements marked “—” and unlisted alloying elements; An unspecified limit does not mean zero content. Clause 1 covers hot-rolled steel products and hot-extruded sections for general structures; cold-heading wire suitability is not established. Table 1: plate, strip and bars; Flat-steel thickness ≤100 mm.

Verification notes

JIS G3101:2024, Table 2 and table note a have been checked

SS330 · Q/BQB 130-2003

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

Material category: Carbon steel
Subcategory: Slab steels
Material form: Rough-rolled slabs for rerolling
Original record status: Original standard verified
Standard edition: Q/BQB 130—2003
Table / clause: 4.1.1, Table 3 and notes 1–3
PDF page references: 2、4
Unit: Mass fraction (wt%)
Analysis type: Heat analysis

Source document

Carbon-equivalent reference

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

C deoxidation method; applicable finished plate thickness ≤6 mm

IIW / CEV：0.0950–0.2517 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）：0.0775–0.1892 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%.

CET：0.0850–0.2150 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.

A deoxidation method; applicable finished plate thickness ≤6 mm; Al is total aluminium Al_t

IIW / CEV：0.1017–0.2583 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）：0.0725–0.1842 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%.

C deoxidation method; applicable finished plate thickness >6–12.7 mm

IIW / CEV：0.1600–0.3333 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）：0.1250–0.2417 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%.

CET：0.1400–0.2800 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.

A deoxidation method; applicable finished plate thickness >6–12.7 mm; Al is total aluminium Al_t

IIW / CEV：0.1350–0.3083 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）：0.0825–0.1992 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%.

CET：0.1050–0.2450 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.

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

Element	Composition requirement
C	0.07 ～ 0.16
Si	≤ 0.05 (lower limit not stated)
Mn	0.15 ～ 0.55
P	≤ 0.035 (lower limit not stated)
S	≤ 0.035 (lower limit not stated)

Applicability and limitations

Q/BQB 130—2003 is a standard for slabs produced by initial rolling for subsequent rerolling. The finished plate thickness in Table 3 means the plate thickness after rerolling the slab, not slab thickness or wire diameter. Table 3 gives ladle analysis in mass fraction wt%; C = capped steel, A = aluminium-killed steel, G = aluminium-silicon-killed steel, K = silicon-killed steel. Read the applicable condition row; unlisted elements are not assumed to be zero. Note 3 to Table 3 requires slabs for thick plate (finished thickness ≥15 mm) to use G aluminium-silicon-killed steel; buyer and supplier must verify applicability of rows involving other deoxidation methods. Product-analysis tolerances for killed steel are separately governed by GB/T 222 and must not be mixed with Table 3 ladle-analysis values.

Original condition-branch records

C deoxidation method; applicable finished plate thickness ≤6 mm

Element	Composition requirement
C	0.07 ～ 0.16
Si	≤ 0.05 (lower limit not stated)
Mn	0.15 ～ 0.55
P	≤ 0.035 (lower limit not stated)
S	≤ 0.035 (lower limit not stated)

Combined limits

PDF page references in the source

Source table row number

A deoxidation method; applicable finished plate thickness ≤6 mm; Al is total aluminium Al_t

Element	Composition requirement
C	0.06 ～ 0.15
Si	≤ 0.05 (lower limit not stated)
Mn	0.25 ～ 0.65
P	≤ 0.035 (lower limit not stated)
S	≤ 0.035 (lower limit not stated)
Al	≥ 0.008 (upper limit not stated)

Combined limits

PDF page references in the source

Source table row number

C deoxidation method; applicable finished plate thickness >6–12.7 mm

Element	Composition requirement
C	0.11 ～ 0.2
Si	≤ 0.05 (lower limit not stated)
Mn	0.3 ～ 0.8
P	≤ 0.035 (lower limit not stated)
S	≤ 0.035 (lower limit not stated)

Combined limits

PDF page references in the source

Source table row number

A deoxidation method; applicable finished plate thickness >6–12.7 mm; Al is total aluminium Al_t

Element	Composition requirement
C	0.06 ～ 0.15
Si	≤ 0.05 (lower limit not stated)
Mn	0.45 ～ 0.95
P	≤ 0.035 (lower limit not stated)
S	≤ 0.035 (lower limit not stated)
Al	≥ 0.008 (upper limit not stated)

Combined limits

PDF page references in the source

Source table row number

A condition branch must be selected

Yes

Verification notes

Baosteel original Table 3, merged cells and notes checked row by row; select conditions by deoxidation method and finished-product thickness.

SS330 · JIS G 3101-2010

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

Material category: Carbon steel
Material form: Hot-rolled steel for general structures
Original record status: Original standard verified
Standard edition: JIS G 3101:2010
Table / clause: Main-text Clause 3/4, Tables 1 and 2
PDF page references: 5、6
Unit: Mass fraction (wt%)
Analysis type: Heat analysis

Carbon-equivalent reference

Composition

Element	Composition requirement
P	≤ 0.05 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)

Applicability and limitations

Original Japanese JIS G 3101:2010, main-text Clause 3, Table 1 lists SS330; applicable forms are plate, strip, flat bars and bars; Table 1 does not list sections. ; No additional maximum is specified in the applicable-size column of Table 1; Structural-steel product forms do not automatically establish suitability or supply as cold-heading wire. ; Main-text Clause 4, Table 2 gives heat-analysis mass fractions wt%; Only the elements already recorded for this entry are listed; the unspecified dash for C/Mn does not mean 0. ; Yield strength, tensile strength, elongation and bending in main-text Clause 5, Table 3 vary with thickness, specimen and form; no general guarantee is displayed before those conditions are structured. ; Historical 2010 is displayed separately; the 2011/2015 reference record and original 2024 record must not automatically be treated as the same edition.

Verification notes

All four rows and merged cells in the original Japanese 2010, main-text Tables 1 / 2 were visually checked

SS330 · CHINA STEEL CORPORATION · Bars and Wire Rods Product Catalogue 2014-C1 / 7.1.23 JIS G3101 (Edition unspecified)

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: Bars and wire rod
Original record status: Manufacturer source verified
Document edition: CAT.NO.3-BD-01-2014-C1 (stated on the back cover)
Document title: Bars and Wire Rods Product Catalogue
Table / clause: 7.1.23 JIS G3101 (Edition unspecified)
PDF page references: 28
Unit: Mass fraction (%)
Analysis type: The original catalogue does not explicitly identify the analysis type for this table
Manufacturer: CHINA STEEL CORPORATION

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.

Composition

Element	Composition requirement
P	≤ 0.05 (lower limit not stated)
S	≤ 0.05 (lower limit not stated)

Applicability and limitations

China Steel bar and wire-rod catalogue CAT.NO.3-BD-01-2014-C1, PDF page 28

printed page 26, 7.1.23 JIS G3101 (edition not stated). The original catalogue does not explicitly identify the analysis type for this table. Historical manufacturer range data, not guaranteed standard limits or heat-specific measurements; this does not establish supply by Creation Group. Condition: mechanical properties in this table vary with diameter and specimen; Only composition is recorded in this batch; mechanical-property conditions are not flattened.

Composition conditions

Historical manufacturer 2014-C1 catalogue, bars/wire rod; Where the referenced standard edition is not identified, a year is not borrowed from another catalogue; a catalogue is not upgraded to the official standard text.
A dash or blank must not be treated as zero. Composition data do not establish completeness or applicability of a formula; mechanical properties and supply require separate verification.
Mechanical properties in this table vary with diameter and test specimen; this batch records composition only and does not flatten the mechanical conditions.

Verification notes

Merged cells in all 28 catalogue tables were reconstructed geometrically, with no missing cells. Original images, continuation pages and notes are recorded; disputed conditions are withheld.