Cold work tool steel DIN 1.2842/AISI O2 ---- medium alloyed cold work steel, with high hardening capacity, good compressive strength.
Equivalent Grade of Steel 1.2842
Standard | Grade |
AISI/SAE | O2 |
W.Nr/DIN | 1.2842 |
Typical Chemical Composition (%)
C | Si | Mn | Cr | V |
0.85-0.95 | 0.10-0.40 | 1.90-2.10 | 0.20-0.50 | 0.05-0.15 |
Heat Treatment of Cold work tool steel 1.2842 / O2
Annealing: 700 to 730℃, slow cooling in furnace (10-20℃/hr), down to approx. 600℃, cooling in air. Hardness after annealing: max. 230HB.
Stress relieving: approx. 650℃, slow cooling in furnace. Hold in neutral atmosphere for 1 to 2hours.
Hardening: 790 to 820℃, oil. Quenching: oil. Hardness obtainable, 60 to 64 HRC.
Tempering: Slowly heating to tempering temperature right after hardening. Recommended to temper 2 or 3 times to increase toughness.
Tempering ℃ | 100 | 200 | 300 | 400 | 500 |
HRC | 64 | 62 | 57 | 52 | 46 |
* Hardening temperature: 800℃, specimen size: dia25mm
Properties of Cold work tool steel 1.2842 / O2
Oil hardening type cold work steel. Good dimensional stability, edge retaining and toughness. Deep hardening properties can be considered as good for smaller and medium-sized sections.
Applications of steel 1.2842 / O2
Blanking and punching dies for sheet thickness up to 6 mm; small straight and circular shear blades, also for paper and plastics; thread cutting tools; gauges and other measuring tools; cold trimming tools; small inserts for plastic moulds and similar tools.
| Available Size of steel 1.2842 / O2 | ||||
| Round： | Dia 12-50mm | hot rolled | ||
| Dia 50-600mm | forged | |||
| Flat/Square： | Thickness | 10-40mm | hot rolled | |
| 30-350mm | hot forged | |||
| Width | 800mm max | |||
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