INTRODUCTION
AISI high speed steel material M42 tool steel is a molybdenum-series high-speed steel alloy with an additional
8% cobalt. (HSS Steel M42) 8% Cobalt tool bits are designed for machining work
hardening alloys and other tough materials. They have increased
water resistance and tool life. This improves performance and
retention of the cutting edge. M42 steel composition makes for a
good combination of toughness and hardness.
High-speed steel M42 steel is widely used in metal manufacturing
industries and in cutting tools manufacturing because of its
superior red-hardness as compared to more conventional high-speed
steels, allowing for shorter cycle times in production environments
due to higher cutting speeds or from the increase in time between
tool changes. HSS M42 tool steel is also less prone to chipping
when used for interrupted cuts and costs less when compared to the
same tool made of carbide. Tools made from cobalt-bearing high
speed steels can often be identified by the letters HSS-Co.
AISI M42 tool steel is a conventionally manufactured cobalt alloyed
high-speed steel. The various stages of the manufacturing process
are chosen and controlled so that an end product is obtained with a
good structure in terms of carbide size and distribution. This is a
distinct advantage for the finished tool.
APPLICATIONS
AISI M42 tool steel is a high-speed steel suitable for cutting
tools such as, twist drills, broaches, taps, milling, cutters, saws, reamers etc. In terms of performance, HSS grade M42
is a steel to be used in conditions where the demand for hot
hardness is of great importance i.e. where high performance is
essential.
Typically employed to machine the super alloys and exotic, AISI HSS
M42 tool steel is employed in drills, hobs, taps, end mills,
milling cutters, form and gear cutters, broaches and chasers.
| Steel Grade | 1.3247 / M42 | 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 |
| M42 | 1.3247 HS2-9-1-8 | SKH59 | W2Mo9Cr4VCo8 |
CHEMICAL COMPOSITION (%)
| C | Si | Mn | P | S | Cr | Mo | V | W | Co |
1.05 1.15 | 0.15 0.65 | 0.15 0.40 | ≤ 0.030 | ≤ 0.030 | 3.50 4.25 | 9.00 10.00 | 0.95 1.35 | 1.15 1.85 | 7.75 8.75 |
MECHANICAL PROPERTIES
| Mechanical properties | Metric | Imperial |
| Hardness, Rockwell C (oil quenched from 1204°C, 5 minutes) | 64.3 | 64.3 |
| Hardness, Rockwell C (oil quenched from 1177°C, 5 minutes) | 65.5 | 65.5 |
| Hardness, Rockwell C(oil quenched from 1163°C) | 65.8 | 65.8 |
| Izod impact unnotched (oil quenched at 1191°C; 510°C temper
temperature) | 13.6 J | 10.0 ft- lb |
| Izod impact unnotched (oil quenched at 1191°C; 622°C temper
temperature) | 24.4 J | 24.4 J |
| Machinability (1% carbon steel) | 35.0 – 40.0% | 35.0 – 40.0% |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elastic modulus | 190-210 GPa | 27557-30457 ksi |
PROCESSING
Forging of ASTM A600 High Speed Tool Steel M42
Pre heat the M42 high speed steel slowly and uniformly to 650-760°C
and equalise. Then increase more quickly to the forging temperature
of 1010-1150°C and equalise prior to forging. Do not allow the
forging temperature to drop below 980°C, if this occurs re heating
will be necessary. Always cool the m42 high speed steel very slowly
after forging.
Heat Treatment of AISI M42 High Speed Material
AISI M42 high speed steel is heated at 871°C (1599°F) and then
cooled slowly in a furnace.
To relieve stresses created by extensive machining or tooling with
complex geometries. Heat in a neutral atmosphere for 1 to 2 hours
after reaching a temperature of 1110 to 1200°F (600 to 650°C),
followed by slow cooling in the furnace.
AISI M42 high speed steel is preheated to 871°C (1599°F), soaked
and finally heated to 1204°C (2199°F).
Tempering M42 tool steel at 560°C / 1040°F or higher 3 times for at
least 1 hour at full temperature is recommended.
Machinability of AISI M42 Tool Steel
AISI Steel grade M42 tool steel can be drilled, turned, threaded,
broached, milled and tapped when it is in its annealed condition
and rated at 45% of 1% carbon steel.
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
