SUS 321
8 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 SUS 321 →SUS 321 · JIS G 4305-2021
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Stainless steel
- Subcategory
- Austenitic stainless steel
- Material form
- Reference record
- Original record status
- Original standard verified
- Standard edition
- JIS G 4305-2021
- Table / clause
- Table 3
- PDF page references
- 8、7
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | ≤ 0.08 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
| Mn | ≤ 2 (lower limit not stated) |
| P | ≤ 0.045 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Ni | 9 ～ 13 |
| Cr | 17 ～ 19 |
| Ti | Not listed; must not be treated as 0 |
Applicability and limitations
Ti≥5×measured C; the original table does not specify an upper limit for Ti, and the 0.70% from other standards shall not be applied; The linkage condition cannot be confirmed without measured C/Ti. ; Heat-analysis mass fractions wt%; Clause 5.2: Product analysis deviations shall follow JIS G0321 Table 5; items not specified require agreement, and the default heat analysis range shall not be expanded. ; This standard covers cold-rolled stainless steel plate, sheet and strip.; This does not establish applicability to the supply of cold-heading wire.. ; Elements not specified in the table shall not be filled as zero; The conventional low-alloy steel formula for carbon equivalent is not applicable to this type of stainless steel.
Combined limits
- Ti
- Minimum-content expression
- 5*C
Verification notes
Original Japanese Table 3/5, 5.1/5.2 and note a were visually checkedSUS 321 · JIS G 4308-2013
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Stainless steel
- Subcategory
- Austenitic stainless steel
- Material form
- Hot-rolled stainless-steel wire rod
- Original record status
- Original standard verified
- Standard edition
- JIS G 4308:2013
- Table / clause
- Table 1 · Grade designations; Table 2 · Chemical composition / Footnotes
- PDF page references
- 4、5
- Unit
- Mass fraction (%)
- Analysis type
- Heat analysis
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | ≤ 0.08 (lower limit not stated) |
| Si | ≤ 1.0 (lower limit not stated) |
| Mn | ≤ 2.0 (lower limit not stated) |
| P | ≤ 0.045 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Ni | 9.0 ～ 13.0 |
| Cr | 17.0 ～ 19.0 |
Applicability and limitations
The original Japanese edition JIS G 4308:2013, Table 2, row 19, heat-analysis mass percentages. ; The standard covers hot-rolled stainless steel wire rod; Product-analysis tolerances must be checked under JIS G 0321 and purchaser requirements; tolerances are not included in the default heat-analysis range. ; Material designation and chemical composition do not establish cold-heading suitability or a supply commitment from Creation Group; Dimensions, delivery and processing condition require separate verification. ; Table 2 coupled condition: Ti≥5×C; no independent fixed minimum is specified, and no value is invented.
Verification notes
The grades in original Table 1–6, the heat-analysis table and footnotes were visually checked row by row; Ti≥5×C: the existing same-edition reference record retains ID and is superseded by the original standard table.SUS 321 · JIS G 4303-2005
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Stainless steel
- Subcategory
- Austenitic stainless steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | ≤ 0.08 (lower limit not stated) |
| Cr | 17 ～ 19 |
| Mn | ≤ 2 (lower limit not stated) |
| Ni | 9 ～ 13 |
| P | ≤ 0.045 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
Applicability and limitations
A material-database match does not establish cold-heading suitability or a finished-product strength commitment; Confirmation requires the actual wire condition, reduction, heat treatment and physical testing. ; The original Japanese 2005, Table 1 confirms this bar-grade designation; Composition and property sources require separate verification under Table 2—6 and the applicable condition.
SUS 321 · JIS G 4304-2005
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Stainless steel
- Subcategory
- Austenitic stainless steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | ≤ 0.08 (lower limit not stated) |
| Cr | ≤ 19 (lower limit not stated) |
| Mn | ≤ 2 (lower limit not stated) |
| Ni | 17 ～ 17 |
| P | ≤ 0.045 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
Applicability and limitations
A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.
SUS 321 · JIS G 4304-2021
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Stainless steel
- Subcategory
- Austenitic stainless steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | ≤ 0.08 (lower limit not stated) |
| Cr | 17 ～ 19 |
| Mn | ≤ 2 (lower limit not stated) |
| Ni | 9 ～ 13 |
| P | ≤ 0.045 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
Applicability and limitations
A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.
SUS 321 · JIS G 4317-2018
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Stainless steel
- Subcategory
- Austenitic stainless steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | ≤ 0.08 (lower limit not stated) |
| Cr | 17 ～ 19 |
| Mn | ≤ 2 (lower limit not stated) |
| Ni | 9 ～ 13 |
| P | ≤ 0.045 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
Applicability and limitations
A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.
SUS 321 · JIS G 4318-2016
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Stainless steel
- Subcategory
- Austenitic stainless steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | ≤ 0.08 (lower limit not stated) |
| Cr | 17 ～ 19 |
| Mn | ≤ 2 (lower limit not stated) |
| Ni | 9 ～ 13 |
| P | ≤ 0.045 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
Applicability and limitations
A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.
SUS 321 · Q/BQB 4302-2009
Original-source verification is incomplete; this is not a formal standard reference
- Material category
- Stainless steel
- Subcategory
- Austenitic stainless steel
- Material form
- Reference record
- Verification status
- Reference data; original source not verified
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | ≤ 0.08 (lower limit not stated) |
| Cr | 17 ～ 19 |
| Mn | ≤ 2 (lower limit not stated) |
| Mo | 2 ～ 3 |
| Ni | 9 ～ 13 |
| P | ≤ 0.045 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Si | ≤ 1 (lower limit not stated) |
Applicability and limitations
A match in the materials database does not establish suitability for cold heading or guarantee finished-product strength. Confirmation must consider wire condition, deformation, heat treatment and tests on actual parts.