Sichuan Liaofu Special Steel Company is one of the most experienced manufacturers and suppliers of astm m2 / din en hs6-5-2c 1.3343 high speed steel bar in China. With over 20 years' experience, our factory offer high quality products made in China with competitive price. Welcome to contact us for wholesale service.
DIN 1.3343 EN HS6-5-2C ASTM M2 High Speed Steel Bar
AISI M2 Tool Steel is molybdenum based high-speed steel in tungsten–molybdenum series. HSS grade steel M2 is a medium alloyed high speed steel which has good machinability. The H-SS M2 chemical composition gives a good combination of well-balanced toughness, wear resistance and red hardness properties. Widely used for cutting tools such as twist drills, taps, milling cutters, saws, knives etc. Also commonly used in cold work punches and dies and cutting applications involving high speed and light cuts.
Grade M2 High Speed Steel is by far the most popular high speed steel replacing high speed steel grade T1 in most applications because of its superior properties and relative economy.
Steel Grade | 1.3343 | Application | Tool steel, Mold Steel |
Shape | Round bar | Standard | AISI, DIN, JIS, GB |
Dimension | ∅2 - 300 mm | Surface | Black, Peeled, Turned, Grinded |
Technique | Hot rolled, Forged | Ultrasonic Test | 100% UT Passed |
Equivalence
AISI / SAE | DIN /W.Nr | JIS | GB |
M2 | 1.3343 HS6-5-2C | SKH51 | CW6Mo5Cr4V2 |
Chemical Composition (%)
C | Si | Mn | P | S | Cr | V | Mo | W |
0.95 1.05 | 0.20 0.45 | 0.15 0.40 | ≤ 0.030 | ≤ 0.030 | 3.75 4.50 | 1.75 2.20 | 4.50 5.50 | 5.50 6.75 |
Mechanical Properties
| Mechanical properties | Metric | Imperial |
| Hardness, Rockwell C (tempered at 1150°F, quenched at 2200°F) | 62 | 62 |
| Hardness, Rockwell C (as hardened, quenched at 2200°F) | 65 | 65 |
| Compressive yield strength (when tempered at 300°F) | 3250 MPa | 471000 psi |
| Izod impact unnotched (when tempered at 300°F) | 67 J | 49.4 ft-lb |
| Abrasion (loss in mm3, as-hardened; ASTM G65) | 25.8 | 25.8 |
| Abrasion (loss in mm3, tempered at 1275°F; ASTM G65) | 77.7 | 77.7 |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
Delivery Condition
-EAF+(ESR) or EAF+LF+VD+(ESR)
-HOT rolled or Forged, Annealed
-Hardness≤255HB
-Surface Finish: Black, Rough Machined, Peeled, Turned or as per given requirements
-UT 100% passed
-Cutting service provided
-Third Party inspection is acceptable (SGS, BV etc.)
Applications
The main use of high-speed steels continues to be in the manufacture of various cutting tools. Typical applications for M2 high speed steel are twist drills, reamers, broaching tools, taps, milling tools, metal saws. M2 is suitable for cold forming tools such as extrusion rams and dies, also widely used in all kinds of cutting tools, knife and punches and die applications, plastic moulds with elevated wear resistance and screws.
Forging of ASTM A600 High Speed Tool Steel M2
Pre heat M2 HSS steel slowly and uniformly to 850-900°C. The heat should then be increased more quickly to the forging temperature of 1050-1150°C. If during the forging the temperature of the M2 high speed tool steel material drops below 880-900°C, re-heating will be necessary. Cool the M2 steel component very slowly after forging.
Heat Treatment of AISI M2 High Speed Material
Anneal
Heat to 1600° F, soak thoroughly at heat. Furnace cool 25° F per hour to 900° F, air cool to room temperature. Approximate annealed hardness 241 Maximum Brinell.
Stress Relief of Unhardened Material: Heat slowly to 1200 to 1250° F. Soak for two hours per inch of thickness at heat. Slow cool (furnace cool if possible) to room temperature.
Harden
Heat slowly to 1550° F, soak thoroughly, heat to 1850° F, soak thoroughly. Soak time in the furnace varies from a few minutes to 15 minutes, depending tool size, heat capacity of the furnace, and the size of the charge. – Heat to 2150 to 2200° F for max. toughness and minimum distortion. – Heat to 2250 to 2275° F for max. hardness and abrasion resistance.
Quench
For full hardness, oil quench to 150-200° F. Air quench to 150° F. When quenching in hot salt maintain the quench just above the Ms temperature. After equalizing withdraw parts from the hot salt and air cooled to 150° F.
Temper
Double temper is mandatory, three tempers are sometimes preferred. Soak for 2 hours per inch of thickness. Air cool to room temperature between tempers. The best tempering range for hardness, strength and toughness is 1000 to 1050° F.
Machinability of AISI M2 Tool Steel
Shaping of HSS M2 tool steels can be carried out using grinding methods. However, they have poor grinding capability and hence they are regarded as “medium” machinability tool steel under annealed conditions. The machinability of these tool steels M2 is only 50% of that of the easily machinable W group or water hardening tool steels.
What we can offer?
-We offer a wide range of steel products in a wide variety of dimensions and executions, according to the common international specifications or customize.
-Machining and heat treatment are available.
-Also, we advise you in choosing the right materials.
Shape Available
Ø Solid round bar
Ø Flat bar
Ø Square bar
Ø Block
Ø Plate
Ø Wire rod
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