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Origin | Jiangsu Baoying | HS Code | 722840000 |
HS Code | 722840000 |
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Plat /Flat Bars |
Thickness:10-800mm |
Hot Rolled & Hot Forged |
Anneal:≤230HB |
Surface: Black surface/ Milling surface |
Tempering: | tool steels are tempered at 482-593°C (900 to 1100°F) for a Rockwell C hardness of 28 to 34. |
Annealing: | Annealing takes place at 760-788°C (1400 to 1450°F) and then the steels are cooled slowly in the furnace at a temperature less than 4°C (40°F) per hour. |
Cold Working: | tool steels are capable of being readily cold worked by using conventional tooling methods with the alloy in the annealed condition. |
Welding: | Conventional methods are used for welding of P20 tool steels. |
Forging: | tool steels are forged at 1093°C (2000°F) down to 899°C (1650°F). Forging below 871°C (1600°F) is not recommended for these steels. |
Forming: | tool steels can be readily formed by conventional methods in the annealed condition. |
Machinability: | tool steels have excellent machinability at about 80% that of water hardening steels. |
Heat Treatment: | tool steels are heated to 871-899°C (1600-1650°F) in the carburizing medium during the carburizing process. After being carburized, these steels are heated to 816-871°C (1500-1600°F) in order to be hardened and then held for 15 minutes and finally oil quenched. |
Applications: | tool steels are used for low-temperature applications that include injection molds and die casting dies. |
Grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
W |
V |
M2 |
0.86-0.94 |
0.45max |
0.4max |
0.03max |
0.030max |
3.8-4.5 |
4.7-5.2 |
5.9-6.7 |
1.7-2.4 |
Mechanical properties |
Metric |
Imperial |
Hardness, Rockwell C (tempered at 1150°F, quenched at 2200°F) |
62 |
62 |
Hardness, Rockwell C (as hardened, quenched at 2200°F) |
65 |
65 |
Compressive yield strength (when tempered at 300°F) |
3250 MPa |
471000 psi |
Izod impact unnotched (when tempered at 300°F) |
67 J |
49.4 ft-lb |
Abrasion (loss in mm3, as-hardened; ASTM G65) |
25.8 |
25.8 |
Abrasion (loss in mm3, tempered at 1275°F; ASTM G65) |
77.7 |
77.7 |
Poisson's ratio |
0.27-0.30 |
0.27-0.30 |
Elastic modulus |
190-210 GPa |
27557-30458 ksi |
GRADES COMPARISON FOR SPRING STEEL | ||||||||
CHINA GB/T | USA ASTM | JAPAN JIS | GERMANY DIN | FRANCE NF | BIRTAIN BS | ISO | KOREA KS | TAIWAN CNS |
65 | 1065 | SUP2 S65-CSP | 60E | XC65 | 060A67 | C60E4 | ||
70 | 1070 | S70C-CSP | 60E | XC70 | 070A72 | 8458-3 DAB | ||
85 | 1084 | SUP2 SK5-CSP | C85E | XC85 | 060A86 | 8458-2 DH | SUP1 | SUP3 |
65Mn | 1566 | S60C-CSP | CK67 | 080A67 | C60E4 | |||
55Si2Mn | 9255 | SUP 6 SUP7 | 55Si7 | 55Si7 | 251H60 | 55SiCr7 | ||
55SiMnVB | ||||||||
60Si2Mn | 9260 | SUP 6 SUP7 | 65Si7 | 65Si7 | 251H60 | 61SiCr7 | SUP3 | SUP6 |
60Si2MnA | 9260 | SUP 6 SUP7 | 65SiMn5 | 55Cr7 | 251H6 | 61SiCr7 | SUP3 | SUP6 |
60Si2CrA | 65SiCr7 | 65SiCr7 | 685H57 | 55SiCr6-3 | ||||
60Si2CrVA | 65SiCr7 | 55SiCr6-3 | ||||||
55SiCrA | ||||||||
55CrMnA | 5155 | SUP9 | 55Cr3 | 55Cr3 | 527A60 | 55Cr3 | SPS5 | SUP9 |
60CrMnA | 5160 | SUP9A | 55Cr3 | 55Cr3 | 527A60 | SPS5A | SUP9A | |
60CrMnMoA | 4161 | SUP13 | SPS9 | SUP13 | ||||
50CrVA | 6150 | SUP10 | 51CrV4 | 51CrV4 | 735A51 | 51CrV4 | SPS6 | SUP10 |
60CrMnBA | 51B60H | SUP11A | 52MnCr83 | 60VrB3 | SPS67 | SUP11 | ||
30w4Cr2VA |
TOCT 14959 |
DIN 17221 |
GB/T 1222 |
NF A35-571 |
ISO 683-14 |
ASTM |
JIS G4801 |
|
A29M |
A322 |
||||||
60C2T |
60SiCr7 |
60Si2Mn |
61SiCr7 |
59Si7 |
9260 |
G92600 |
SU P6 |
C |
Si |
Mn |
Cr |
p |
S |
Ni |
Cu |
0.56-0.64 |
1.50-2.00 |
0.60-0.90 |
≤0.35 |
≤0.035 |
≤0.035 |
≤0.35 |
≤0.25 |
Product Type |
Delivery Condition |
Mechanical property |
Delivery Hardness |
||||
Rm |
Rel |
A11 |
Z |
Sample |
|||
Hot rolled round bar/square bar |
Hot rolled |
≥ |
≥ |
≥ |
≥ |
Q+T |
321 |
Forged round bar/square bar |
Hot rolled |
||||||
Hot rolled strips |
Hot rolled |
||||||
Cold drawing round bar |
Hot processing |
1270 |
1180 |
5 |
25 |
- |
- |
Hot rolled thin plate |
Hot rolled |
950 |
- |
12 |
- |
- |
- |
Cold rolled steel strips |
Y+T+QT |
785-1180 |
|
|
|
Y |
|
T=tempering;Q=quenching;QT=globurizing;Y=chilling |
Delivery Condition | Sizes | Surface |
1.Cold Rolled Only | 1.Thickness: 0.1-100mm | Bright / Polished / Blue |
2.Cold Rolled+Anaerobic Annealed | 2.Width: 8-3000mm | |
3.Cold Rolled+Hardened+Tempered | Coil insider diameter: Φ300-500mm | |
4.Cold Rolled+Patented |
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