Alleima® 3X1R63 is an austenitic stainless steel with a high molybdenum content. Significant properties, such as general and pitting corrosion resistance, are improved in comparison with ASTM 316L.
Standards
- ASTM: 317L
- UNS: S31703
- EN Number: 1.4438
- W.Nr.: 1.4438
- SS: 2367
- BS: 317S16
Product standards
- EN 10088-3
- ASTM A-314
Suitable for production of flanges etc. according to ASTM A-182
Certificates
Status according to EN 10 204 3.1
Chemical composition (nominal) %
| C | Si | Mn | P | S | Cr | Ni | Mo | Others |
|---|---|---|---|---|---|---|---|---|
| ≤0.030 | 0.4 | 1.8 | ≤0.030 | ≤0.010 | 18.5 | 13.5 | 3.1 | - |
Forms of supply
Sizes and tolerances
Round-cornered square, as well as round billets, are produced in a wide range of sizes according to the following tables. Larger sizes offered on request.
Surface conditions
Square billets
Unground, spot ground or fully ground condition.
Round billets
Peel turned or black condition.
| Size | Tolerance | Length |
|---|---|---|
| mm | mm | m |
| 80 | +/-2 | 4 - 6.3 |
| 100, 114, 126, 140, 150 | +/-3 | 4 - 6.3 |
| 160, 180, 195, 200 | +/-4 | 4 - 6.3 |
| >200 - 350 | +/-5 | 3 - 5.3 |
Sizes and tolerances apply to the rolled/forged condition.
| Size | Tolerance | Length |
|---|---|---|
| mm | mm | m |
| 75 - 200 (5 mm interval) | +/-1 | max 10 |
| >200 - 450 | +/-3 | 3 - 8 |
| Size | Tolerance | Length |
|---|---|---|
| mm | mm | m |
| 77 - 112 (5 mm interval) | +/-2 | max 10 |
| 124, 134 | +/-2 | max 10 |
| 127, 147, 157 | +/-2 | max 10 |
| 142, 152, 163 | +/-2 | max 10 |
| 168, 178, 188 | +/-2 | max 10 |
| 183, 193 | +/-2 | max 10 |
Other products
- Hollow bar
Mechanical properties
At 20°C (68°F)
| Proof strength | Tensile strength | Elong. | Hardness | |
|---|---|---|---|---|
| Rp0.2a | Rp1.0a | Rm | Ab | Vickers |
| MPa | MPa | MPa | % | |
| approx. | ||||
| ≥220 | ≥250 | 515-690 | ≥35 | 155 |
| Proof strength | Tensile strength | Elong. | Hardness | |
|---|---|---|---|---|
| Rp0.2a | Rp1.0a | Rm | Ab | Vickers |
| ksi | ksi | ksi | % | |
| approx. | ||||
| ≥32 | ≥36 | 75-100 | ≥35 | 155 |
1 MPa = 1 N/mm2
a) Rp0.2 and Rp1.0 correspond to 0.2% offset and 1.0% offset yield strength, respectively.
b) Based on L0 = 5.65 ÖS0 where L0 is the original gauge length and S0 the original cross-section area.
Impact strength
Due to its austenitic microstructure, Alleima® 3R64 has very good impact strength both at room temperature and at cryogenic temperatures.
Tests have demonstrated that the steel fulfils the requirements according to the European standards prEN 13445-2 (UFPV-2) ( (min. 60 J (44 ft-lb) at -270 oC (-455 oF)) and prEN 10216-5 (min. 60 J (44 ft-lb) at -196 oC (-320oF).
At high temperatures
| Temperature | Proof strength | |
|---|---|---|
| °C | Rp0.2a | Rp1.0a |
| MPa | MPa | |
| min. | min. | |
| 50 | 196 | 221 |
| 100 | 172 | 197 |
| 150 | 155 | 180 |
| 200 | 144 | 169 |
| 250 | 136 | 161 |
| 300 | 129 | 154 |
| 350 | 123 | 148 |
| 400 | 119 | 144 |
| 450 | 115 | 140 |
| 500 | 110 | 135 |
| Temperature | Proof strength | |
|---|---|---|
| °F | Rp0.2a | Rp1.0a |
| ksi | ksi | |
| min. | min. | |
| 200 | 25.4 | 29.0 |
| 400 | 20.8 | 24.4 |
| 600 | 18.4 | 22.1 |
| 800 | 17.0 | 20.6 |
| 1000 | 15.4 | 19.0 |
Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Alleima materials.