Steel with characteristics similar to X8CrNiS18-9 (AISI 303), but with the addition of copper which, in addition to improving machinability on machine tools, also makes it suitable for certain types of cold deformation.
Standard Reference: EN 10088-3: 2014 (Hot-rolled and bright products)
| EUROPE | ITALY | GERMANY | FRANCE | UK | USA | ||
|---|---|---|---|---|---|---|---|
| EN 10088-3: 2005 |
(UNI 6900:71) |
(DIN 17440-85) |
(NF A 35-574-90) |
(BS 970 pt. 3 -91) |
AISI | ||
| Grade | N° | Werkstoff | N° | ||||
| X6CrNiCuS18-9-2 | 1.4570 | - | - | - | Z8CNUF18-09 | - | - |
| C / max | Si / max | Mn / max | P / max | S | N/ max | Cr | Cu | Mo / max | Ni |
|---|---|---|---|---|---|---|---|---|---|
| 0,08 | 1,00 | 2,00 | 0,045 | 0,15÷0,35 | 0,10 | 17,0÷19,0 | 1,40÷1,80 | 0,60 | 8,0÷10,0 |
| Size (mm) |
Hardness HB max* ** | Rp 0,2 (MPa) min | Rp 1 (MPa) min* | Rm (MPa)** | A5 (%) min** | Resistance to intergranular corrosion | |
|---|---|---|---|---|---|---|---|
| in the delivery condition | in the welded condition | ||||||
| d≤100 | 215 | 185 | 220 | 500÷710 | 35 | NO | NO |
| * Only for guidance. ** The maximum HB values may be raised by 100HB or the tensile strenght value may be raised by 200 MPa and the minimum A% value may be lowered to 20% for bars of ≤35 mm. |
|||||||
| Size (mm) | Rp 0,2 (MPa) min | Rm (MPa)0 | A5 (%) min* |
|---|---|---|---|
| d≤10 | 400 | 600÷950 | 15 |
| 10<d≤16 | 400 | 600÷950 | 15 |
| 16<d≤40 | 185 | 500÷910 | 20 |
| 40<d≤63 | 185 | 500÷910 | 20 |
| 63<d≤100 | 185 | 500÷710 | 35 |
| * Values valid only for size ≥5 mm. | |||
| Tensile strength levels | Rm (MPa) |
|---|---|
| +C 600 | 600÷800 |
| +C 700 | 700÷900 |
| +C 800 | 800÷1000 |
| +C 900 | 900÷1100 |
| +C 1000 | 1000÷1250 |
| Note: the desired tensile strength level shall be evaluated depending on diameter required. |
|
| Size | A (%) max | Rm (MPa) max |
|---|---|---|
| 0,10≤d≤0,20 | 20 | 1050 |
| 0,20≤d≤0,50 | 30 | 1000 |
| 0,50≤d≤1,00 | 30 | 950 |
| 1,00≤d≤3,00 | 30 | 900 |
| 3,00≤d≤5,00 | 35 | 850 |
| 5,00≤d≤16,00 | 35 | 800 |
| Note: If skin passed, Rm might be increased by up to 50 MPa. | ||
| Operation | °C |
|---|---|
| Hot forgings deformation | 900÷1150 |
| Solution annealing (water, air) | 1020÷1100 |
