1.3343, HS6 5 2C, M2, SKH51 Matrix High Speed tool Steels
1. Description:
1.3343 S6-5-2 is a general purpose high speed steel. 1.3343 S6-5-2 high speed steel offers good wear resistance with excellent toughness and cutting power. Molybdenum high speed steel, uniform carbide and high toughness. Because of its nice hardness and wear resistance, it is mainyly used to machine the low machinability materials.
2. Applications:
Standard material for machining tools, e.g. drill bits, milling cutters, screw dies, broaches, inserts for circular
saw blades. slotting tools and wood working tools. In addition cold forming tools e.g. cutting and blanking tools,
cold extrusion punches and dies. Excellent base material for PVD/CVD coating.
3. Chemical composition：
|
Grade
|
Standard
|
C
|
Si
|
Mn
|
Cr
|
Mo
|
V
|
W
|
P、S≤
|
|
M2
|
ASTM
|
0.78-1.05
|
0.20-0.45
|
0.15-0.40
|
3.75-4.50
|
4.50-5.50
|
1.75-2.20
|
5.50-6.75
|
0.030
|
|
1.3343
|
DIN
|
0.86-0.94
|
≤0.45
|
≤0.40
|
3.80-4.50
|
4.70-5.20
|
1.70-2.10
|
5.90-6.70
|
0.030
|
|
SKH51
|
JIS
|
0.80-0.88
|
≤0.45
|
≤0.40
|
3.80-4.50
|
4.70-5.20
|
1.70-2.10
|
5.90-6.70
|
0.030
|
4. Mechanical properties:
High-speed steel, high strength at elevated temperatures, good toughness, high compressive strength, good wear resistance. Similar to AISI M2.
5. Conditions of delivery：
EAF/ESR, forged/hot rolled, black/turned(milled), annealed
Soft annealed to max. 262 HB
6. Available sizes:
Round Bar: Φ 6-410mm
Flat: 8-160*205-710mm
Mould: 200*200-1200*1000mm
Length: 3000-6000mm
7. Physical properties:
|
Temperature [oC]
|
20-100
|
20-200
|
20-300
|
20-400
|
|
Thermal expansion [10-6.K-1]
|
10.8
|
11.8
|
12
|
12.5
|
|
Temperature [oC]
|
20
|
350
|
700
|
|
|
Heat conductivity [W.m-1.K-1]
|
27.6
|
27,2
|
26.1
|
|
8. Heat treatment:
|
Soft annealing:
|
Temperature [oC]
|
Cooling
|
Hardness
|
|
|
780-860
|
Furnace
|
max. 262 HB
|
||
|
Stress relief annealing
|
Temperature [oC]
|
Cooling
|
|
|
|
600-650
|
Furnace
|
|
|
|
|
Hardening and tempering:
|
Austenization [oC]
|
Hardening
|
Tempering
|
|
|
1180-1230
|
oil, pressure gas (N2),
air or hot bath 500 - 550°C
|
see tempering
diagram
|
||
Tempering: 540 - 570 °C
Hardness after tempering: 64 - 66 HRC
