| Model: | 1.2581/H21 |
|---|---|
| Brand: | DIN 1.2581 / AISI H21 Tool Steel |
| Origin: | Made In China |
| Category: | Metallurgy , Mining & Energy / Metallurgy & Mining / Bars, Rods, Angles, and Stainless Steel Shapes |
| Label: | 1.2581 tool steel , H21 tool steel , 1.2581/H21 ESR steel |
| Price: |
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| Min. Order: | - |
| Last Online:05 Jul, 2016 |
1.2581 Tool Steel
|
Standards |
DIN |
AISI |
JIS |
ГОСТ |
|
X30WCrV93 |
1.2581 |
H21 |
SKD5 |
3X2B8Φ |
ALTA SPECIAL STEEL supply DIN 1.2581 / AISI H21 in round bar, plate, square, sheet and block.
Tungsten-chrome-vanadium steel for hardening in oil and possibly in air with very good hardenability, very high firmness during the heat and resistance to the tempering, high resistance to the hot tempering and good toughness. Further the steel has a lower resistance to tearing of thermal fatigue and higher sensitivity to quick changes of temperature. The steel is not appropriate for tools cooled by water. It is well-workable during the heat and well-workable in the soft-annealed state.
We welcome your inquiries for tool steel, please contact us for quotation sales@altaspecialsteel.com
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Chemical Composition
|
C |
Si |
Mn |
P |
S |
Cr |
W |
V |
|
0.25-0.35 |
0.15-0.30 |
0.20-0.40 |
≤0.030 |
≤0.030 |
2.50-2.80 |
8.00-9.00 |
0.30-0.40 |
Product Range
Round bars : Dia 8mm - 500mm
Flat bars : Thick 8mm - 405mm, width up to 810mm
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Applications : for tools for hot mechanical working such as highly stressed small pressing dies and die inserts especially for die forging of accurate products from the difficult-workable steels and copper alloys, thorns and jaws for forging presses, forgings for swaging, tools for production of rivets, nuts and screws, small extrusion dies (matrices), thorns, pressing discs for extrusion of alloys of non-ferrous metals. Firm and movable parts of molds, core and other small and highly stressed parts of molds for pressure casting of copper alloys can be made from the steel. Tools for hot cutting such as highly stressed small shear blades, punching dies, small trimming dies.
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Heat Treatment
|
Way |
Temperature[℃] |
Remark |
|
Forging |
850 - 1100 |
|
|
Soft annealing |
740 - 780 |
Max. 241HB after annealing |
|
Quenching |
1140 - 1160 |
Cool in oil to the temperature of about 100 °C |
|
Cool bigger and difficult-shape tools in air or in thermal bath at 500 – 550 °C |
||
|
Tempering |
590 - 610 |
|
|
℃ |
400 |
500 |
600 |
650 |
700 |
|
HRC |
49 |
51 |
51 |
45 |
38 |
