DIN 50191:1971-02

Отменен

Testing of iron materials; hardenability test by end quenching; length of test piece 100 mm, diameter of test piece 25 mm — 4 стр.

Ссылочные документы

Заменен

Materials testing machines; design and application of test piece holding devices in hardness testing machines — 7 стр.

Отменен

Hardenability testing of steel by end quenching — 7 стр.

Отменен

Hardenability testing of steel by end quenching — 7 стр.

Действует

Heat Treatment of Ferrous Metals; Material Selection; Steel Selection according to Hardenability — 10 стр.

Отменен

Flame and Induction Hardening Steels; Quality Specifications — 14 стр.