GB/T 7CrSiMnMoV Cold Worked Mold Steel
The utility of 7CrSiMnMoV:
1. Machining of hardened steel components
2. Metal stamping and forming
3. Plastic injection molding
4. Die casting
5. Cold working processes
- HONGXIN
- DAYE
- 30 DAYS
- 8000 TON/MONTH
- Information
GB/T 7CrSiMnMoV Cold Worked Mold Steel
1:GB/T 7CrSiMnMoV steel introduction
7CrSiMnMoV is a high strength, flame and induction hardening steel delivered prehardened to 250-290 HB. The surface of the steel can be flame hardened without water cooling. The hardened and tempered matrix provides good support for the flame hardened layer. 7CrSiMnMoV is particularly suitable for tools with surfaces exposed to abrasion and which can be flame hardened.
7CrSiMnMoV is a new type of cold work tool steel, also known as flame quenching cold work tool steel. It belongs to the series of high carbon low alloy cold work tool steel. The typical elements of 7CrSiMnMoV are Cr, Si, Mn, etc. A small amount of strengthening elements, like Mo and V are also included.
2:GB/T 7CrSiMnMoV steel equivalent
| Country | China | Japan |
| Standard | GB | |
| Grade | 7CrSiMnMoV | CH-1 |
3: GB/T 7CrSiMnMoV steel mechanical properties
| Yield | Rp0.2 (MPa) | 752 (≥) |
| Tensile | Rm (MPa) | 985 (≥) |
| Impact | KV/Ku (J) | 43 |
| Elongation | A (%) | 42 |
| Reduction in cross-section on fracture | Z (%) | 22 |
| As-Heat-Treated Condition | _ | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Brinell hardness | (HBW) | 242 |
4: GB/T 7CrSiMnMoV steel overviews
| Size | Round | Dia 12-500mm | |
| 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 | ||
5:Heat treatment
Annealing: 860 to 840℃, slow cooling in furnace 3 to 4 hrs, down to approx. 550℃, cooling in air. Hardness after annealing: max. 241HB.
Hardening: flame hardening
| Item | Preheating ℃ | Heating temperature ℃ | Cooling method | Hardness |
| Quenching | 180～200 ℃, 2H | 900～1000 | Air cooling | 62～64HRC |
| Tempering | 180～200 | Air cooling | 58～62HRC |
| Item | Heating temperature/℃ | Initial forging temperature/℃ | Final forging temperature/℃ | Cooling |
| Ingot | 1200 | 1100~1150 | 800~850 | Slow cooling |
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
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.
