1. Delivery conditions and applicable requirements
Table 1 – Delivery conditions, product forms and applicable requirements
| Heat-treatment condition | Symbol | Bar | Wire rod | Wire | Ferritic | Martensitic | Austenitic and austenitic-ferritic |
|---|---|---|---|---|---|---|---|
| Soft annealed | +A | X | X | X | X | X | — |
| Solution annealed | +AT | X | X | X | — | — | X |
| Basis of order | Applicable requirements |
|---|---|
| Chemical composition | Table 3 |
| Mechanical properties | Table 5, 6, 7 or 8, depending on the steel grade |
| Supplementary or special requirements | EN 10263-1:2017, Annex A, if agreed at the time of enquiry and order. |
Table 2 – Surface condition at delivery
| Surface condition | Symbol | Bar | Wire rod | Wire |
|---|---|---|---|---|
| Cold drawn | +C | — | X | X |
| Peeled | +PE | X | — | X |
| Lightly drawn | +LC | — | — | X |
X = applicable; — = not applicable. Other delivery conditions may be agreed at the time of enquiry and order.
Heat-treatment condition, steel structure group and surface condition must be distinguished. This table is a standard reference and does not confirm actual supply.
Source: EN 10263-5:2017, Table 1 and 2, page 8–9 (PDF page 10–11).
2. Chemical composition
Table 3 – Chemical composition of stainless steels (cast analysis)
Reference requirements for X2CrNi18-9, steel number 1.4307. These are not analysis results for a particular heat. The order standard and requirements for raw material and finished product must be confirmed separately.
| Element | Mass fraction, % |
|---|---|
| C | ≤0.030 |
| Si | ≤1.00 |
| Mn | ≤2.00 |
| P | ≤0.045 |
| S | ≤0.030 |
| Cr | 17.5–19.5 |
| Mo | — |
| Ni | 8.0–10.5 |
| N | ≤0.10 |
| Cu | ≤1.00 |
| Other elements | — |
Elements not listed must not be intentionally added without the purchaser’s agreement, except for finishing the heat. Precautions are required to prevent additions from scrap and other production materials that could impair mechanical properties or the suitability of the steel.
Values are maximum limits unless a range or other qualification is given. A dash or blank source field supplies no numerical value and does not mean zero.
Note b: For machinability, controlled S of 0.015–0.030% is recommended and permitted. For weldability, controlled S of 0.008–0.030% is recommended and permitted. For polishability, S ≤0.015% is recommended.
Table 4 – Permissible deviations for product analysis
| Element | Limiting values for cast analysis, % | Permissible deviation for product analysis, % |
|---|---|---|
| C | ≤0.030 | +0.005 |
| C | >0.030 and ≤0.15 | ±0.01 |
| Si | ≤1.00 | +0.05 |
| Si | >1.00 and ≤2.00 | +0.10 |
| Mn | ≤1.00 | +0.03 |
| Mn | >1.00 and ≤2.00 | ±0.04 |
| P | ≤0.045 | +0.005 |
| S | ≤0.015 | +0.003 |
| S | >0.015 and ≤0.030 | +0.005 |
| N | ≤0.22 | ±0.01 |
| Cr | ≥11.5 and <15.0 | ±0.15 |
| Cr | ≥15.0 and ≤20.0 | ±0.20 |
| Cr | >20.0 and ≤23.0 | ±0.25 |
| Cu | ≤1.00 | +0.07 |
| Cu | >1.00 and ≤4.0 | ±0.10 |
| Mo | <1.75 | ±0.05 |
| Mo | ≥1.75 and ≤3.5 | ±0.10 |
| Ni | ≤1.00 | +0.03 |
| Ni | >1.00 and ≤5.0 | ±0.07 |
| Ni | >5.0 and ≤10.0 | ±0.10 |
| Ni | >10.0 and ≤14.0 | ±0.15 |
| Ti | ≤0.70 | ±0.05 |
± means that, within one heat, the product analysis for a given element may deviate above the upper limit or below the lower limit in Table 3, but not both at the same time.
Source: EN 10263-5:2017, Table 3 on page 10 (PDF page 12), and Table 4 on page 12 (PDF page 14). These tables do not replace the complete standard.
3. Mechanical properties
Table 5 – Mechanical properties of austenitic stainless steels in the specified delivery condition
| Steel name | Steel number | Diameter | Delivery condition | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| +AT or +AT+PE | +AT+C | +AT+C+AT | +AT+C+AT+LC | ||||||||
| over, mm | up to and including, mm | Rm max., MPa | Z min., % | Rm max., MPa | Z min., % | Rm max., MPa | Z min., % | Rm max., MPa | Z min., % | ||
| X2CrNi18-9 | 1.4307 | 2 | 5 | — | — | — | — | 680 | 68 | 730 | 63 |
| X2CrNi18-9 | 1.4307 | 5 | 10 | 630 | 68 | 800 | — | 630 | 68 | 680 | 63 |
| X2CrNi18-9 | 1.4307 | 10 | 25 | 630 | 68 | 760 | — | 630 | 68 | — | — |
| X2CrNi18-9 | 1.4307 | 25 | 50 | 630 | 68 | 740 | — | 630 | 68 | — | — |
Source: EN 10263-5:2017, Table 5, page 12. Rm is tensile strength; Z is reduction of area at fracture. The values apply to the specified diameter intervals and delivery conditions. A dash does not mean zero or confirm availability.
Table 9 – Permissible depth of surface defects
| Diameter in the delivery condition, mm | Maximum permissible defect depth, mm |
|---|---|
| ≤10 | 0.10 |
| >10 | 1% of the diameter |
For diameters below 5 mm, the permissible depth of surface defects must be reduced in proportion to the diameter reduction during cold drawing.
For ferritic, martensitic and austenitic-ferritic steels, larger values may be agreed at the time of enquiry and order.
Source: EN 10263-5:2017, Table 9, page 15 (PDF page 17).