DC53
OtherDC53
Improved cold work die steel (D2 replacement). Higher toughness & longer tool life.
Chemical Composition (%)
| C | 0.95 |
|---|---|
| SI | 0.8 |
| MN | 0.3 |
| CR | 7.5 |
| MO | 1.8 |
| V | 0.15 |
| P | 0.025 |
| S | 0.01 |
Mechanical Properties
Hardness(annealed):≤255 HB;Hardness(hardened):60-64 HRC
Chinese Standard
DC53
Equivalent Standards
DC53 / D2 Premium Grade
Equivalent Grades
JIS SKD11 Modified
Applications
High-performance stamping dies, blanking, shearing
Available Forms
Block,Plate,Round
Uses
High-carbon chromium bearing steel for rolling-element bearings, races and precision balls/rollers. Combines high hardness, fatigue life and dimensional stability; also used for gauges, needles and wear parts.
Heat Treatment
Spheroidize anneal (760–780 °C), austenitize 830–860 °C oil quench, temper 150–180 °C to 60–66 HRC; stabilising treatments improve dimensional stability.
Precautions
Preheat and control interpass temperature when welding; post-weld heat treatment or stress relief is recommended to avoid hard-zone cracking. Use low-hydrogen electrodes. Protect from decarburization during heating (controlled atmosphere or protective coating).
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