H13 die steel is used to manufacture forging die with large impact load, hot extrusion die, precision forging die; aluminum, copper and its alloy die-casting die.
Characteristic
H13 steel is the most widely used and most representative hot work die steel. Its main characteristics are as below:
(1) has high hardenability and high toughness;
(2) Excellent resistance to thermal cracking, which can be water-cooled in the workplace;
(3) It has medium abrasion resistance, and can also be used to improve the surface hardness of carburizing or nitriding process, but slightly reduce the resistance to thermal cracking;
(4) Because of its low carbon content, the secondary hardening ability in tempering is poor;
(5) It has softening resistance at higher temperatures, but the hardness is higher than 540 °C (1000 °F), and the hardness is rapidly decreased (ie, the working temperature is 540 °C);
(6) The deformation of the heat treatment is small;
(7) medium and high machinability;
(8) Medium resistance to decarburization.
Even more noteworthy is that it can also be used to make important components in the aerospace industry.
Form of H13 hot work mold steel
steel round bar,Dia.20-600mm
steel plate width (210-610) * thickness (6-80) hot rolling
steel pipe outer diameter (6-219) * wall thickness (0.5-25)
Reference picture
Hot Work Tool Steel DIN 1.2344 / AISI H13/ JIS SKD61
AISI / SAE |
DIN / W.Nr |
JIS |
GB |
H13 |
1.2344 |
SKD61 |
4Cr5MoSiV1 |
Steel Grade |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
V |
1.2344 |
0.35 |
0.80 |
0.25 |
≤ |
≤ |
4.80 |
1.20 |
0.85 |
H13 |
0.32 |
0.80 |
0.20 |
≤ |
≤ |
4.75 |
1.10 |
0.80 |
SKD61 |
0.32 |
0.80 |
0.25 |
≤ |
≤ |
4.50 |
1.00 |
0.80 |
Heat Treatment
1. Pre-heat treatment H13 steel and mold blanks supplied on the market have been annealed in steel mills to ensure good metallographic structure, proper hardness, good processability and no need for annealing. However, after the forging of the manufacturer, the original structure and properties were destroyed, the forging stress was increased, and re-annealing was necessary.
The isothermal spheroidizing annealing process is: heating at 860~890 °C for 2 h, cooling to 740-760 °C for 4 h, and cooling the furnace to about 500 °C.
2. Quenching and tempering require good toughness mold quenching process specification: heating temperature 1020~1050 °C, oil cooling or air cooling, hardness 54~58HRC; mold hardening process specification requiring hot hardness, heating temperature 1050~1080°C, Oil-cooled, hardness 56~58HRC.
Recommended tempering temperature: 530 ~ 560 ° C, hardness 48 ~ 52HRC; tempering temperature 560 ~ 580 ° C; hardness 47 ~ 49HRC.
Tempering should be carried out twice. When tempered at 500 °C, the secondary hardening peak of tempering occurs, and the tempering hardness is the highest, and the peak value is about 55HRC, but the toughness is the worst. Therefore, the tempering process should be avoided at around 500 °C. According to the use of the mold, tempering is better in the range of 540~620 °C.
The quenching heating should be preheated twice (600~650 °C, 800~850 °C) to reduce the thermal stress generated during the heating process.
3. Chemical heat treatment If the gas is nitrided or nitrocarburized, the mold can be further strengthened, but the nitriding temperature should not be higher than the tempering temperature to ensure that the core strength is not reduced, thereby improving the service life of the mold.
Stress Relieving
Hardening
What we can offer?
Shape Available
AISI | DIN | JIS | Application | ||
Hot Work Tool Steel | H11 | 1.2343 | SKD6 | Die Casting Dies,Extrusion Dies, Hammer Dies, Ram Dies, Forging Dies etc. |
|
H13 | 1.2344 | SKD61 | |||
H10 | 1.2365 | SKD7 | |||
—— | 1.2367 | —— | |||
L6 | 1.2714 / 1.2713 | SKT4 | |||
H12 | 1.2606 | SKD62 | |||
H21 | 1.2581 | SKD5 | |||
Cold Work Tool Steel | D3 | 1.2080 | SKD1 | Cutting Tools, Punching Tools, Shear Bladers, Reamers, Thread Rolling Dies, Calipers, Sockets etc. | |
—— | 1.2601 | ~SKD11 | |||
D2 | 1.2379 | ~SKD11 | |||
—— | 1.2379 MOD | DC53 (Daido) | |||
D6 | 1.2436 | —— | |||
O1 | 1.2510 | SKS3 | |||
O2 | 1.2842 | —— | |||
A2 | 1.2363 | SKD12 | |||
S1 | 1.2550 | —— | |||
S7 | 1.2357 | —— | |||
—— | 1.2767 | SKT6 | |||
L2 | 1.2210 | —— | |||
Plastic Mould Steel |
P20 | 1.2311 | —— | Mold Base, Core & Cavity, Bumper Mold etc. | |
P20+Ni | 1.2738 | —— | |||
P20+S | 1.2312 | —— | |||
—— | 1.2316 | —— | |||
420 | 1.2083 | SUS420J2 | |||
—— | —— | NAK80 (Daido) | |||
Alloy Steel | 4120 | 25CrMo4 / 1.7218 | SCM420 | Shafts, Gears, Drillers, Chains, Bolts, Nuts, Pins, Suds, Keys, Bites, Crankshafts, Connecting Rods, Came, Couplings etc. | |
4135 | 34CrMo4 / 1.7220 | SCM435 | |||
4130 | 34CrMo4 / 1.7220 | SCM430 | |||
4140 | 42CrMo4 / 42CrMoS4 / 1.7225 | SCM440 | |||
4142 | 41CrMo4 / 1.7223 | SCM440 | |||
4145H | —— | —— | |||
4330V | —— | —— | |||
4340 | 34CrNiMo6 / 1.6582 | SNCM439 | |||
5115 | 16MnCr5 / 16MnCrS5 / 1.7131 | ||||
5120 | 20MnCr5 / 20MnCrS5 / 1.7147 | SMnC420H | |||
5140 | 41Cr4 / 41CrS4 / 1.7035 | SCr440 | |||
8620 | 21NiCrMo2 / 1.6523 | SNCM220 | |||
8640 | 40NiCrMo2-2 / 1.6546 | SNCM240 | |||
—— | 18CrNiMo7-6 / 17CrNiMo6 / 1.6587 | —— | |||
9840 | 36CrNiMo4 / 1.6511 | —— | |||
E71400 | 41CrAlMo7-10 / 1.8509 | SACM1 | |||
—— | 34CrAlNi7 / 1.8550 | —— | |||
Bearing Steel | E52100 | 100Cr6 / 1.3505 | SUJ2 | Bearing, Shafts etc. |
|
—— | 100CrMn6 / 1.3520 | —— | |||
—— | 100CrMo7-3 / 1.3536 | —— | |||
Spring Steel | 5155 | 55Cr3 / 1.7176 | SUP9 | Springs | |
6150 | 51CrV4 / 1.8159 | SUP10 | |||
9261 | 60CrSi7 / 1.7108 | —— | |||
Carbon Steel | 1010 | CK10 / C10E / 1.1121 | S10C | Shafts, Chains, Bolts, Nuts, Pins, Suds, Keys, Bites, Came, Couplings etc. | |
1020 | C22 / 1.0402 | S20C | |||
1040 | CK40 / C40E / 1.1186 | S40C | |||
1045 | CK45 / C45E / 1.1191 | S45C | |||
1050 | CK50 / C50E / 1.1206 | S50C | |||
1055 | CK55 / C55E / 1.1203 | S55C | |||
1064 | CK60 / C60E / 1.1221 | S58C | |||
High Speed Tool Steel | M2 | 1.3343 | SKH51 | Reamer, End-mill, Hob, Cutter, Bite, Drill, Punch, Tap, Brooch etc. |
|
M7 | 1.3348 | —— | |||
M42 | 1.3247 | SKH59 | |||
M35 | 1.3243 | SKH55 | |||
T1 | 1.3355 | SKH2 | |||
T15 | 1.3202 | —— | |||
T42 | 1.3207 | SKH57 |
Note:
Contact
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