Alleima® 6RA11 is an austenitic stainless free-machining steel with addition of sulphur.
Standards
- ASTM: 303
- UNS: S30300
- EN Number: 1.4305
- W.Nr.: 1.4305
Product standards
- EN 10088-3
- ASTM A-314
Certificates
Status according to EN 10 204 3.1
Chemical composition (nominal) %
| C | Si | Mn | P | S | Cr | Ni |
|---|---|---|---|---|---|---|
| 0.05 | 0.4 | 1.8 | ≤0.045 | 0.3 | 18 | 9 |
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
Testing is performed on separately solution annealed and quenched test piece.
The following figures apply on material in the solution annealed and quenched condition.
At 20°C (68°F)
| Proof strength | Tensile strength | Elong | Contr. | HB | |
|---|---|---|---|---|---|
| Rp0.2a) | Rp1.0a) | Rm | Ab) | Z | |
| MPa | MPa | MPa | % | % | |
| approx. | |||||
| ≥205 | ≥240 | 515-690 | ≥35 | ≥50 | 170 |
Imperial units
| Proof strength | Tensile strength | Elong | Contr. | HB | |
|---|---|---|---|---|---|
| Rp0.2a) | Rp1.0a) | Rm | Ab) | Z | |
| ksi | ksi | ksi | % | % | |
| approx. | |||||
| ≥29.5 | ≥35 | 74.5-100 | ≥35 | ≥50 | 170 |
1 MPa = 1 N/mm2
a) Rp0.2 and Rp1.0 corresponds to 0.2% offset and 1.0% offset yield strength, respectively.
b) Based on L0 = 5.65√S0 , where L0 is the original gauge length and S0 the original cross-section area.
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.