M2 1.3343 SKH51 QT
M2 1.3343 SKH51 QT General cold work die steel with good machinability,to be made die casting mold,extrusion and injection mold and ejector pins,ejector sleeve,punches,block gauge,measuring tools.
High wear resistance,high toughness,small deformation caused by heat treatment.
Have a high and uniform hardness after heat treatment,heat resisting,resistance to high temperature oxidation,good toughness,machinability and weldability.
Pre-hardened HRC 58-62.
PRODUCT : DIN 1.3343/M2/SKH51 QUENCHED & TEMPERED ROUND BARS
CHEMICAL COMPOSITION:
C | Si | Mn | P | S | Cr | Mo | V | W |
0.86-0.94 | ≤0.45 | ≤0.40 | ≤0.030 | ≤0.030 | 3.80-4.50 | 4.70-5.20 | 1.70-2.10 | 6.0-7.0 |
Specifications:
DELIVERY HARDNESS: QUENCHED & TEMPERED 58-62HRC
DELIVERY CONDITION:
1. QUENCHED & TEMPERED BLACK ROUND BRS
2. QUENCHED & TEMPERED CENTERLESS GRINDING ROUND BRS
DIAMETERS : FROM 2mm TO 16mm
DIAMETER TOLERANCE : AS PER DIN 175 OR EQUIVALENT ISO h7,h8,h9
DELIVERY LENGTHS: FROM 1METER TO 6 METERS
STRAIGHTNESS:0.5MM/M
Characteristics :
Have high hardness and high wear resistance and toughness
Applications :
To be made high precision pins with long working time
Heat Treatment :
Quenched in 1180-1200°c,tempered thrice in 540-600 °c
<img src="https://img.waimaoniu.net/2326/2326-202104251003154352.jpg" style="width: 800px;" width="800" border="0" vspace="0" title="prehardened steel M2""/>