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Temper/Hardness Specification 2020-06-02T08:00:43+00:00

Temper/Hardness Specification

(Based on ASTM A623)
Designation T-1 T-2 T-3 T-4 T-5 DR-8 DR-9
Aim Rockwell Range (30-T Scale) 46-52 50-56 54-60 58-64 62-68 73 76
EN10202 Old EN ASTM Annealing Reduction Yield stress
(MPa)
TS230 T50 T1 BA SR 230
TS245 T52 T2 BA SR 245
TS260 T55 BA SR 260
TS275 T57 T3 BA SR 275
TS290 T59 T4 BA SR 290
BA SR 340
BA DR 480
BA DR 500
DR520 DR7.5 BA DR 520
DR550 DR8 BA DR 550
CA SR 330
CA SR 360
TH415 T61 T4 CA SR 415
TH435 T65 T5 CA SR 435
CA DR 460
CA DR 480
TH520 DR520 DR7.5 CA DR 520
TH550 DR550 DR8 CA DR 550
TH580 DR580 DR8.5 CA DR 580
TH620 DR620 DR9 CA DR 620