Table 2 Charpy impact energy (Cev) at RT and LNT for the Fe-30Mn-0.11C steel for fine (5.6 μm) and coarse (47.0 μm) mean grain size.

From: Cryogenic toughness in a low-cost austenitic steel

Mean grain size (μm)

LNT

RT

Cev (J)

Average (J)

Cev (J)

Average (J)

47.0 (coarse)

265

269 ± 16

378

372 ± 5

290

372

251

365

5.6 (fine)

458

453 ± 4

335

334 ± 4

448

329

452

340

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