JIS SKT4 Cold Worked Mold Steel
The usage of JIS SKT4:
1. Tool and die making: JIS SKT4 is often used to make cutting tools, molds, and dies for metalworking processes. Its high toughness and wear resistance make it ideal for these applications.
2. Automotive industry: JIS SKT4 is used in the production of automotive parts and components, such as engine components, gears, and transmission parts. Its high temperature resistance and durability make it well-suited for these applications.
3. Aerospace industry: JIS SKT4 is also used in the aerospace industry for the manufacturing of aircraft components, such as landing gear, engine parts, and structural components. Its high strength and toughness make it suitable for use in these demanding applications.
- HONGXIN
- DAYE
- 30 DAYS
- 8000 TON/MONTH
- Information
JIS SKT4 Cold Worked Mold Steel
1: JIS SKT4 steel introduction
This is one of the special purpose, low alloy tool steel grades, similar to the W group of low alloy tool steels. L6 contains nickel, chromium and molybdenum for a good combination of toughness and hardenability.
2: JIS SKT4 Steel equivalent
| Country | China | Japan | Germany | USA | UK |
| Standard | GB/T 1299 | JIS G4404 | DIN EN ISO4957 | ASTM A681 | BS 4659 |
| Grade | 5CrNiMo | SKT4 | 1.2713 | L6/T61206 | BH224/5 |
3: JIS SKT4 steel chemical composition
| C | Si | Mn | P | S | Cr | Mo | W | V | Co | Ni |
|---|---|---|---|---|---|---|---|---|---|---|
| 0,50-0,60 | 0,15-0,40 | 0,50-0,80 | Max 0,030 | Max 0,030 | 0,50-0,80 | 0,15-0,25 | - | - | - | 1,40-1,80 |
4: JIS SKT4 steel mechanical properties
| Yield Rp0.2 (MPa) | Tensile Rm (MPa) | Impact KV (J) | Elongation A (%) | Reduction in cross section on fracture Z (%) | As-Heat-Treated Condition | HBW |
|---|---|---|---|---|---|---|
| 296 (≥) | 679 (≥) | 31 | 41 | 22 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 422 |
5: JIS SKT4 steel overviews
| Size | Round | Dia12-500mm | |
| Plate/Flat/Block | Thickness 8mm-300mm | ||
| Width 210mm-710mm | |||
| Process | EAF+LF+VD+Forged+Heat treatment(optional) | ||
| Heat treatment | Normalized ; Annealed ; Quenched ; Tempered | ||
| Surface condition | Black; Peeled; Polished; Machined; Grinded; Turned; Milled | ||
| Delivery condition | Forged; Hot rolled; Cold drawn | ||
| Test | Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc. | ||
| Payment terms | T/T;L/C;/Money gram/ Paypal | ||
| Trade terms | FOB; CIF; C&F; etc.. | ||
| Packing | Standard Packages, or as Customers Request | ||
| Delivery time | 30-45 days | ||
6. JIS SKT4 Tool Steel Heat Treatment
Soft Annealing
Heat to 670-700oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 250.
Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to approx. 650oC, holding for 1-2 hours at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.
Hardening
Harden from a temperature of 830-870oC followed by oil quenching. Hardness after quenching is 57-61 HRC.
Tempering
Tempering temperature: 400-700oC.
7: Delivery condition
For hot forged or hot rolled bar, usually the delivery condition is hot forged or rolled, annealed, rough turned.
For hot forged plate, usually the delivery condition is hot forged, annealed, milled surface.
For hot rolled plate, usually the delivery condition is hot rolled, annealed, black surface.
Hongxin Mold Tech Co.,Ltd. owns 1 set of Hot Rolling Production Line at size range flats 8-80*210-710mm, rounds 16-50mm Dia.
12 sets of Hydraulic Forging Hammers from Power 560kgs to 6000kgs which could cover flats 40-300*210-710mm.
8 sets of EF+LF+VD
5 sets of ESR
9 sets of Milling Machines
10 sets of Turning Lathes
6 sets of Precision Milling Machines.
CERTIFICATION: GB/T19001-2016/ISO9001:2015
Products' List
Packaging&Shipping
Q1:Are you trading company or manufacturer ?
We are the biggest tool steel factory at Daye & Huangshi. We can provide a wide range of steel products.
Q2:What is alloy steel round bar export packing?
Usually bundling for large diameter,small diameter bars in bulk or as customer's demand.
Q3.What is your MOQ?
We accept small order,if it is stock,any quantities can be accepted.
Q4.What is your lead time?
Depends actual order,around 20-35 days,or negotiation.
Q5.Can you supply sample?
Yes,we can.Sample fee according to your size.
Q6:What certificates do you have?
ISO, ABS, BV, CCS, Dnv, Lr, Gl, Mill Certificate
Q7: How can I get your quotation as soon as possible?
The email and fax will be checked within 24 hours,meanwhile,the Skype,Wechat and WhatsApp will be online in 24 hours.Please send us your requirement,we will work out a best price soon.
