High-temperature martensitic steel alloy pipes and tubes designed for demanding industrial applications.
| Specification | Designation |
|---|---|
| ASTM/ASME Plate | A/SA 387 Gr.91 |
| ASTM/ASME Bar | A/SA 182 F91 |
| ASTM/ASME Pipe | A/SA 335 P91 |
| W.Stoff Number | 1.4903 |
Martensitic high-temperature steel primarily used in:
Excellent resistance to high working temperatures up to approximately 650°C.
Plates conform to EN 1.4903/X10CrMoVNB9-1 / ASTM A 387 / ASME SA 387 specifications with ultrasonic testing according to both EN 10160 S2/E3 and ASTM A578 level C. Material is tempered at 770°C.
| Element | Composition (%) |
|---|---|
| Al | min. 0.040 |
| C | 0.08 - 0.12 |
| Cr | 8.00 - 9.50 |
| Cu | max. 0.30 |
| Mn | 0.30 - 0.60 |
| Mo | 0.85 - 1.05 |
| N | 0.030 - 0.070 |
| Nb | 0.06 - 0.10 |
| Ni | max. 0.30 |
| P | max. 0.020 |
| S | max. 0.005 |
| Property | Value |
|---|---|
| Yield Strength | min. 435 N/mm² |
| Tensile Strength | 580 - 760 N/mm² |
| Impact Toughness (KV) | +20°C / 40J |