INTRODUCTION
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.
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.
| Steel Grade | 1.3343 / M2 | Application | Tool steel, Mold Steel |
| Shape | Round Bar | Standard | GB, ASTM, DIN,JIS |
| Dimension | Φ2-300 mm; length below 16m | Surface | Black, Bright, Polished, Peeled |
| Technique | Cold drawn; Hot rolled; Forged | Ultrasonic Test | 100% UT Passed |
DELIVERY CONDITIONS
| Diameter (mm) |
| Cold drawn | 10-100 |
| Peeled | 30-160 |
| Grinded | 10-600 |
| Turned | 130-1600 |
| Hot Rolled | 20-280 |
| Hot Forged | 130-1000 |
-EAF+(ESR) or EAF+LF+VD+(ESR)
-HOT rolled or Forged, Annealed
-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.)
EQUIVALENT GRADES
| AISI/SAE | DIN | JIS | GB |
| M2 | 1.3343 HS6-5-2C | SKH51 | CW6Mo5Cr4V2 |
CHEMICAL COMPOSITION (%)
| C | Si | Mn | P | S | Cr | Mo | V | W |
M2 | 0.95 1.05 | 0.20 0.45 | 0.15 0.40 | ≤ 0.030 | ≤ 0.030 | 3.75 4.50 | 4.50 5.50 | 1.75 2.20 | 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 |
PROCESSING
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
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.
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.
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.
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
- Solid round bar
- Flat bar
- Square bar
- Hexagon bar
- Block
- Plate
- Sheet
- Wire rod
- Strip
Our Advantages
- High mechanical property and quenching, enable the surface share
equal hardness after deal with it
- Good polishing and low roughness
- Making the heat-treatment to harden condition before using it
- Competitive price
- Fast production lead-time
- All the material are inspected with 3 times to meet the highly
standards
- Pure steel quality & stable quality to be guarantee
OUR MAIN PRODUCTS ARE LISTED AS BELOW
Notes:
Available Size:
-Round: Dia. 2-300 mm
-Flat: T. 6-250 mm x W. 20-600 mm
-Block: T. 80-1200 mm x W. 100-1600 mm
PAYMENT AND SHIPPING
1. Both T/T and L/C will be acceptable
2. Trade Terms: FOB, CIF, CFR
3. The delivery will be in 10-15 days if have stock; For customized
items, the delivery will be negotiated by both parties
4. Shipping by sea freight from Shanghai Port (PRC) for Bulk
orders, by airfreight or express for samples
COMPANY INFORMATION
Shanghai Unite Steel Trading Co., Ltd
We are committed to integrate engineering steel resources in china
and serve the global engineering steel market. Our company has more
than 15 years of experience in steel researching, production,
managing and sales. And our team mostly are based on and worked in
national famous steel enterprise.
In the aspect of resources and information, we have established
cooperative and stronger relationship with nearly hundred
enterprises, either state-owned or private owned in china.
What’s more, we have built long, deep and close business
relationship with dozens of steel company, Sharing and holding
equities with several steel enterprises. Because of the close
cooperation with steel companies and our pioneering spirit, which
can ensure us stay at the top competition, and ensure our customers
get what they really want!
FAQ
Q: Are you a manufacturer or merely a trader?
A: We are group of companies and owned manufacturer bases and
trading company. We specialized in special steel which include
alloy structural steel and carbon steel and stainless steel, etc.
All material are with high quality and competitive price.
Q: How do you guarantee the quality of your product?
A: Firstly, we can provide the certificates from the third party,
such as TUV, CE, if you need. Secondly, we have a complete set of
inspection system and every process is checked by QC. Quality is
the lifeline of enterprise survival.
Q: Delivery time?
A: We have ready stock for most of material grades in our
warehouse. If the material doesn't have stock, the delivery lead
time is about 5-30 days after receiving your prepayment or firm
order.
Q: What is the payment term?
A: T/T or L/C.
Q: Can we visit your company and factory?
A: Yes, warmly welcome! We can book the hotel for you before you
come to China and arrange our driver to our airport to pick you up
when you come.
CONTACT US
We are happy to answer your questions and make you an offer for
these and other materials. Contact us now for more information.
Your Contact Person
Ms Chilli Ho
Phone/Wechat/Whatsapp +86-181-0187-5575
Skype: chilli.ho@outlook.com
Email: chilli.ho@shunitesteel.com
