Chemical
Composition |
C |
Si |
Mn |
Cr |
P |
S |
Mo |
V |
W |
| 1.55-1.75 |
0.25-0.40 |
0.20-0.40 |
11.00-12.00 |
0.03MAX |
0.03MAX |
0.50-0.70 |
0.10-0.50 |
|
0.40-0.60 |
Available
size |
Round Bar |
Diameter |
Length |
| 16-800mm |
2000-6000mm |
| Flat Bar |
Thickness |
Width |
Length |
| 16-400mm |
100-800mm |
2000-6000mm |
Surface
condition |
Black surface/ Grinded/ Machined |
Annealed
hardness |
HB250MAX |
| Characteristics |
High carbon and high chromium, ledeburitic 12% Cr alloyed cold work tool steel, dimensionally stable, high wear resistance, against abrasive ad adhesive, good toughness, edge-holding ability and compression strength, good thermal conductivity, high red hardness, good resistance to heat cracking, low distorsion, non-deforming, full hardness with air hardness in any dimension, suitable for bath nitriding . |
| Applications |
High performance blanking, punching, stamping and cutting tools and dies up to 6mm sheet thickness tread rolling, chasers and dies, cold forming and bending tools, precision blanking dies, longitudinal and circular shear blades for plastic, paper and metal, milling cutters, reamers, broaches, hobbing tools, tools for drawing, deep drawing and cold extrusion, woodworking tools, pressing tools for the sinters, ceramics and pharmaceutical industries, cold piercers, measuring tools, rolling cutters and shaping wheels, cold pilger mandrels, flanging, straightening and beading rolls, trimming and splitting dies, tools for cold manufacture of screws, nuts and rivets, plastic moulds. |
Heat
Treatment |
Annealing: |
800-850℃ |
| Hardness after annealing: |
Max. 250HB |
| Stress relleving: |
650-700℃ |
| Hot forming: |
850-1050℃ |
| Hardening: |
980-1010℃ |
| Quenching media: |
Oil, Salt bath (220-250℃ or 500-550℃), Air or compressed air |
| Hardness after quenching: |
63-65 HRC |
| Hardness after tempering: |
100℃ |
200℃ |
300℃ |
400℃ |
| 64HRC |
62HRC |
60HRC |
58HRC |
Mechanical
properties |
Density: |
at 20 ℃7,70 kg/dm3 |
| Thermal Conductivity: |
at 20 ℃20,0 W/(m/k) |
| Thermal expansion between: 20 ℃and…℃ , 10-6mm/(mk) |
| 100℃ |
200℃ |
300℃ |
400℃ |
500℃ |
| 10.5 |
11 |
11 |
11.5 |
12 |
 |
|
