Steel similar to X6Cr17 (AISI 430) with the addition of molybdenum, which confers a good resistance to atmospheric corrosion at room temperature and at higher temperatures.
Standard Reference: EN 10088-3: 2014 (Hot-rolled and bright products) | EN 10263-5: 2017 (Wire rods, bars and wire for cold heading products)
| EUROPE | ITALY | GERMANY | FRANCE | UK | USA | ||
|---|---|---|---|---|---|---|---|
| EN 10088-3: 2005 |
(UNI 6900:71) |
(DIN 17440 - 85) |
(NF A 35-574-90) |
(BS 1554 -90) | AISI | ||
| Grade | N° | Werkstoff | N° | ||||
| X6CrMo17-1 | 1.4113 | X8CrMo17 | X6CrMo17-1 | 1.4113 | Z8CD17-01 | 434S20 | AISI 434 |
| C / max | Si / max | Mn / max | P / max | S / max | Cr | Mo |
|---|---|---|---|---|---|---|
| 0,08 | 1,00 | 1,00 | 0,040 | 0,030 | 16,0÷18,0 | 0,90÷1,40 |
| Size (mm) | Hardness HB max* | Rp 0,2 (MPa) min | Rm (MPa) | A5 (%) min | Resistance to intergranular corrosion | |
|---|---|---|---|---|---|---|
| in the delivery condition | in the welded condition | |||||
| d≤100 | 200 | 280 | 440÷660 | 18 | YES | NO |
| * Only for guidance. | ||||||
| Size (mm) | Rp 0,2 (MPa) min | Rm (MPa) max | A5 (%) min* |
|---|---|---|---|
| d≤10 | 340 | 540÷700 | 8 |
| 10<d≤16 | 320 | 500÷700 | 12 |
| 16<d≤40 | 280 | 440÷700 | 15 |
| 40<d≤63 | 280 | 440÷700 | 15 |
| 63<d≤100 | 280 | 440÷660 | 18 |
| * Values valid only for size ≥5 mm. | |||
| Tensile strength levels | Rm (MPa) |
|---|---|
| +C 500 | 500÷700 |
| +C 650 | 650÷850 |
| +C 800 | 800÷1000 |
| +C 900 | 900÷1100 |
| Note: the desired tensile strength level shall be evaluated depending on diameter required. |
|
| Size | A (%) max | Rm (MPa) max |
|---|---|---|
| 0,10≤d≤0,20 | 10 | 900 |
| 0,20≤d≤0,50 | 15 | 850 |
| 0,50≤d≤1,00 | 15 | 850 |
| 1,00≤d≤3,00 | 15 | 800 |
| 3,00≤d≤5,00 | 15 | 750 |
| 5,00≤d≤16,00 | 20 | 700 |
| Note: If skin passed, Rm might be increased by up to 50 MPa. |
||
| Size (mm) |
As Treated (+AT) or Peeled (+AT+PE) |
Cold Drawn (+AT +C) |
Cold Drawn + Solution annealed (+AT +C +AT) |
Cold Drawn + Solution annealed + Skin passed (+AT +C +AT +LC) |
|||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Rm (MPa) max | Z (%) min | Rm (MPa) max | Z (%) min | Rm (MPa) max | Z (%) min | Rm (MPa) max | Z (%) min | ||||
| 2≤d≤5 | - | - | - | - | 600 | 60 | 660 | 58 | |||
| 5<d≤10 | 600 | 60 | 710 | 57 | 600 | 60 | 640 | 58 | |||
| 10<d≤25 | 600 | 60 | 690 | 57 | 600 | 60 | - | - | |||
| Operation | °C |
|---|---|
| Hot forgings deformation | 800÷1100 |
| Annealing (air) | 750÷850 |
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