(supersedes all previous editions)
Alleima® 8LR70 is an austenitic, titanium-stabilized stainless chromium–nickel steel alloyed with molybdenum.
Suitable for production of flanges etc. according to ASTM A-182
Status according to EN 10 204 3.1
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.
Unground, spot ground or fully ground condition.
Peel turned or black condition.
|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.
|75 - 200 (5 mm interval)||+/-1||max 10|
|>200 - 450||+/-3||3 - 8|
|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|
Testing is performed on separately solution annealed and quenched test piece. The following figures apply to material in the solution annealed and quenched condition.
At 20°C (68°F)
1 MPa = 1 N/mm2
Due to its austenitic microstructure, Sandvik 8LR70 has very good impact strength both at room temperature and at cryogenic temperatures.
Tests on bar have demonstrated that the steel fulfils the requirements (60 J (44 ft-lb) at -196 oC (-320 oF)) according to the European standards prEN13445-2(UFPV-2) and EN 10272.
At high temperatures
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.