Guangzhou Changfeng Steel Co., LTD
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Forged High Speed Tool Steel 1.3343 / M2 SKH51 To Make Cutters
Introduction:
M2 steel is a general purpose molybdenum high speed steel. M2 steel is characterized by balanced combination of abrasion resistance, toughness and good red hardness. Due to its comparatively low carbon content, M2 steel has an excellent combination of toughness properties and abrasion resistance when properly hardened and tempered. M2 steel is used in a wide used for all kinds of cutting tool, knife and punch and die applications.
Available size(mm):
Flat bar: Round bar:
Thickness: 10-700mm Diameter: 10-300mm
Width: 155-2200mm Length:3000-6000mm
Length: 3000-6000mm
Chemical Composition(%):
| C | Si | Mn | Cr | Mo | V | W | P | S |
| 0.80-0.90 | 0.20-0.45 | 0.15-0.40 | 3.80-4.40 | 4.50-5.50 | 1.75-2.20 | 5.50-6.75 | ≤0.030 | ≤0.030 |
Feature:
(1) The steel With carbide fine uniform, high toughness and good thermoplastic advantages;
(2) High hardness, high wear resistance, high hardness, high hardenability;
(3) Enough plasticity and toughness, and have good casting, forging, welding and machining
performance,so it occupies in the tool steel and the important position.
Application:
To make various cutters and cold work mild weth wearproof.
Production load large, complex shape and valuable tool (e.g., scraper, gear, milling cutter,
drilling, tapping, etc.
Heat treatment temperature
| Quenching | Tempering | ||||||
| Heating temperature/℃ | Cooling way | Hardness (HRC) | Tempering temperature/ºC | Cooling way | Hardness (HRC) | ||
| First preheating | Second preheating | Last heating | |||||
| 550-600 | 950-1000 | 1220-1250 | Oil Cooling | ≥63 | 550-570 | Air Cooling | 60-62 |
Delivery conditions:
Annealed hardness : 255HBW,
Hot rolled,forged
Surface conditions: rough turning, peeling, polishing
Quality Condition:
1. Both end of each bar must be cut
2. Ladle furnanced and vacuum de-gassed
3. Show heat No. on each bar
4. Surface condition the surface of the hot rolled square bar shall befree cracks, scar and wrinkles that affect the use of the billets. In case there is the above-mentioned defect, it shall be remove.
5. The mill test certificate shall show the chemical composition, and it is guaranteed that the chemical composition shall be within the limit stipulated in the contract.
Product pictures:
