Item |
| Round | Dia 12mm-500mm | |
Flat (*when forged, production width is 4 times than thickness) | Thickness 12mm-400mm |
Width 50mm-800mm |
Chemical Composition (can be customized) | BS BD3 | C:1.90-2.30, Si:≤0.60, Mn:≤0.60, Cr:12.00-13.00, Ni:≤0.40, V:≤0.50, Cu:≤0.20, Sn:≤0.05 |
DIN 1.2080
| C:1.90-2.20, Si:0.10-0.60, Mn:0.20-0.60, Cr:11.00-13.00, P≤0.030, S:≤0.030
|
AISI D3
| C:2.00-2.35, Si:<0.60, Mn:<0.60, Cr:11.00-13.50, P≤0.030, S:≤0.030
|
| C:1.90~2.20, Si:0.10~0.60, Mn:0.20~0.60, Cr:11.00-13.00, V:≤0.030, P:≤0.030, S:≤0.030
|
GB Cr12 | C:2.00~2.30, Si:≤0.40, Mn:≤0.40, Cr:11.50~13.00, Ni:≤0.25, Cu:≤0.30, Co:≤1.00, P:≤0.030, S:≤0.030
|
Process | EAF+LF+VD+ESR+FORGED/ROLLED+Heat Treatment (Annealed,A Normalized, Q+T) |
Heat treatment | Normalized ; Annealed ; Quenched ; tempered |
Surface Condition/Treatment | Black surface; Grinded/Peeled ; Machined;Turned/Bright |
Inspection | 100% Ultrasonic according to the test standards:SEP1921-84,CLASS C/c or D/d |
Payment Terms | T/T;L/C (30% advance payment by T/T, and 70% should be paid against the color scanned copy of BL by T/T or irrevocable L/C at sight) |
Trade Terms | FOB; CIF; CFR |
Packing | Standard seaworthy packing or as customer required |
Shipping Marks | As Buyer/Seller's option. N/M means no marks. |
Invoicing | According to acctural weight (25 tons). If the acctural weight ≥ 25 tons, pls fill less to the seller for the over weight according to the PI price. |
Size tolerence | 0/+2mm for bright / grinded / machined surface, 0/+4mm for black / peeled surface. |
Length tolerence | 10% shorter length should be allowed. |
Quantity tolerence | -10%/+10% for total quantity. |
Physical Properties |
Density | at 20 °C 7,70 kg/dm |
Thermal conductivity | at 20 °C 20,0 W/(m.K) |
Thermal expansion between 20 °C and__°C, m/(mK) | 100 °C: 10,5; 200 °C: 11,0; 300 °C: 11,0; 400 °C: 11,5; 500 °C: 12,0 |
Heat Treatment |
Annealing | 800 - 850 °C
|
Hardness after Annealing
| Max. 250 HB
|
Stress relieving
| Approx. 650 °C
|
Hot forming
| 1050 - 850 °C
|
Hardening
| 940 - 970°C
|
Quenching media
| Oil, Salt bath ( 220 - 250 °C or 500 - 550 °C )Air or compressed air up to 25 mm thickness
|
Hardness after quenching | 63 - 65 HRC |
| 100 °C: 63 HRC, 200 °C: 62 HRC, 300 °C: 60 HRC, 400 °C: 57 HRC. |
| Heavy duty and highly stressed all type of blanking, cutting and punching tools up to 4 mm sheet thickness with excell-ent edge holding properties, cold forming tools, woodworking tools, thread rolling dies, shaping, flanging and beadingdies, punches and dies for cold nut manufacture, deburring tools, tools for spinning, deep drawing dies, sand blasting nozzles, press tools for the ceramic, sinters, pharmaceutical, brick and refractory industries, scraping and trimming dies,powder pressing tools, shear blades for plastic, paper, cardboard and metal, cold extrusion for light alloys and steel,knurling tools, wire drawing dies, profile rolls, measuring tools, moulds for plastic materials.
|