1.2738 718H P20 + Ni Special Steel Plate and Steel Sheet
China 1.2738 718H P20 + Ni Special Steel Plate and Steel Sheet, Find details about China Alloy Steel, Mould Steel from 1.2738 718H P20 + Ni Special Steel Plate and Steel Sheet
Basic Info.
Model NO.
HSSD 2738, AISI P20 Modified, 1.2738
Special Use
High-strength Steel Plate, Wear Resistant Steel, Injection Molding
Stock
Stock
Grade
Hssd 2738/AISI P20 Modified
Test
Ut 100% / SGS
Delivery Quantiity
Include MOQ
Place of Origin
China
Application Hardness
28-36HRC
Payment
30% Deposit,Blance by L/C at Sight or T/T
Delivery Day
7-15 days
Trademark
CF
Transport Package
Seaworthy Packing
Specification
thickness: 21-300mm width: >=155mm, length: 5800mm
Origin
China
HS Code
7225401000
Model NO.
HSSD 2738, AISI P20 Modified, 1.2738
Special Use
High-strength Steel Plate, Wear Resistant Steel, Injection Molding
Stock
Stock
Grade
Hssd 2738/AISI P20 Modified
Test
Ut 100% / SGS
Delivery Quantiity
Include MOQ
Place of Origin
China
Application Hardness
28-36HRC
Payment
30% Deposit,Blance by L/C at Sight or T/T
Delivery Day
7-15 days
Trademark
CF
Transport Package
Seaworthy Packing
Specification
thickness: 21-300mm width: >=155mm, length: 5800mm
Origin
China
HS Code
7225401000
Product Desciption
1.2738 718H P20 + Ni Special Alloy Mould Steel block Plate flat bar round bar
Available in round bar, flat bar, plate and block. Diameters can be sawn to your required lengths as one offs or multiple cut pieces. Rectangular pieces can be sawn from flat bar or plate to your specific sizes. Ground tool steel bar can be supplied, providing a quality precision finished bar to tight tolerances.
Contact our experienced sales team who will assist you with your 1.2378/steel plate d2/die steel enquiry.
1, Introduction
2738 is one improved kind of pre-hardened mirror plastic die steel.With the alloy optimization and structure control key technology.
We can guarantee the steel die block has high hardness uniformity, excellent polishing property and machining property with large cross sections in China.
This steel can replace the imported new large cross sectional prehardened plastic die steel such as 1.2738/718HH/P20 modified, etc.
Chemical compositions (%)
Available Size
Manufacturing process:
EF→LF→VD→Argon gas protection casting ingot→Multidirectional forging→Normalizing→Annealing heat treatment→UT→Quenching→Tempering pre-hardening heat treatment→Product testing
3, Delivery date
Stocked products: 7-15 days
Customized products: 30-50 days
Product Photo
Quality inspection
Packing: Standard Export Packing or As per request
Forging of 1.2378/steel plate d2/die steel
Heat the 1.2378/steel plate d2/die steel tool steel slowly and uniformly to 700°C then more rapidly to 900-1040°C. After forging cool down slowly.
Stress Relieving of 1.2378/steel plate d2/die steel
When tools made from 1.2378/steel plate d2/die steel tool steel are heavily machined, ground or otherwise subjected to cold work, the relief of internal strains is advisable before hardening to minimise the possibility of distortion. Stress relieving should be done after rough machining. To stress relieve, heat the component to 600-650°C. Soak well and cool in the furnace or in air. The tools may then be finish machined before hardening.
Martempering of 1.2378/steel plate d2/die steel
Martempering is an alternative hardening procedure which may be used when suitable salt bath equipment is available. By this method internal strain, distortion and risk of quench cracking are reduced to the minimum. Pre-heat dry at 300-400°C. Pre-heat in salt at 800-850°C holding in the salt for ten minutes per inch of ruling section. Raise to the hardening temperature of 950-980°C holding in the salt for ten minutes per inch of ruling section. Marquench in salt at 230-250°C holding in the bath for five minutes 25mm of ruling section. Cool in still air. Tempering will be necessary.
Heat treatment of 1.2378/steel plate d2/die steel
Heat treatment temperatures, including rate of heating, cooling and soaking times will vary due to factors such as the shape and size of each 1.2378/steel plate d2/die steel component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult your heat treatment provider for full guidance on heat treatment of tool steels.
Final Grinding of 1.2378/steel plate d2/die steel
Select the correct grade of wheel in consultation with the grinding wheel manufacturer. Ensure the grinding wheel is in good condition by means of a suitable dressing tool. Wet grinding is a preferable option using a copious supply of coolant. If dry grinding is resorted to then use a very soft wheel.
Our services:
1.Sizes material and others are all at your requirements and can be change
2.Price varies on material , dimensions, finished craft and different payments
3.We are direct manufacturer in machinery manufacturing with experience of many years
4.Detailed production design can be made according to the information you offered
5.Each material will be passed the UT test
6.We have an adequate inventory, so that we can effect a quick delivery
Available in round bar, flat bar, plate and block. Diameters can be sawn to your required lengths as one offs or multiple cut pieces. Rectangular pieces can be sawn from flat bar or plate to your specific sizes. Ground tool steel bar can be supplied, providing a quality precision finished bar to tight tolerances.
Contact our experienced sales team who will assist you with your 1.2378/steel plate d2/die steel enquiry.
1, Introduction
2738 is one improved kind of pre-hardened mirror plastic die steel.With the alloy optimization and structure control key technology.
We can guarantee the steel die block has high hardness uniformity, excellent polishing property and machining property with large cross sections in China.
This steel can replace the imported new large cross sectional prehardened plastic die steel such as 1.2738/718HH/P20 modified, etc.
Grade | 1.2738// AFNOR 40CMND8/ DIN 40CrMnNiMo7/ AISI P20modified |
Features | Good welding property of pre-hardened die blocks |
Good polishing property(high hardness uniformity, hardness fluctuation ≤2hrc | |
Excellent working performance | |
Extra large cross sections:700mm*1300mm maximum and weighs 20MT for one piece | |
Application hardness:28-36HRC | |
Applications | Plastic molds for injection compressing and injection molding TV cabinets, drum mold of washing machine, etc |
Mechanical Properties | Rb:1095-1115N/mm Corresponding hardness:35-36HRC |
Rb :915-1000N/mm Corresponding hardness:28-30HRC | |
| Delivery Quantity | Include MOQ |
Payment terms | 30% Deposit,Balance by L/C at sight or T/T |
Delivery Day | 7-15 days |
Chemical compositions (%)
| C | Si | Mn | P | S | Cr | Ni | Mo |
| 0.30-0.40 | 0.20-0.50 | 1.00-1.50 | ≤0.010 | ≤0.030 | 1.50-2.00 | 0.80-1.20 | 0.25-0.40 |
Available Size
| Grade | Size(mm) | ||
| 1.2738 Plate | Thickness | Width | Length |
| 21-300 | 2200 | 5800 | |
Manufacturing process:
EF→LF→VD→Argon gas protection casting ingot→Multidirectional forging→Normalizing→Annealing heat treatment→UT→Quenching→Tempering pre-hardening heat treatment→Product testing
2, Applications of 1.2378/steel plate d2/die steel
A popular grade for toolmakers, 1.2378/steel plate d2/die steel is used in a wide variety of tool making applications. Typical applications include blanking dies and punches for sheet in stainless steel, brass, copper, zinc and hard abrasive materials generally. Other application include deep drawing dies, cupping dies, forming dies, sheet metal forming rolls, shear blades for strip and sheet including flying shears, circular cutters for cold rolled strip, trimmer dies, thread rolling dies, cold extrusion dies, broaches, plug gauges, ring gauges, special taps, straybolt taps, brick and tile mould liners, master hobs for cold hobbing plastic moulds and cut moulds for plastics.3, Delivery date
Stocked products: 7-15 days
Customized products: 30-50 days
Product Photo
Quality inspection
Packing: Standard Export Packing or As per request
Forging of 1.2378/steel plate d2/die steel
Heat the 1.2378/steel plate d2/die steel tool steel slowly and uniformly to 700°C then more rapidly to 900-1040°C. After forging cool down slowly.
Annealing of 1.2378/steel plate d2/die steel
1.2378/steel plate d2/die steel is supplied in the annealed and machineable condition. Re-annealing will only be necessary if the steel has been forged or hardened by the toolmaker. To anneal, heat slowly and uniformly to 900°C. Soak for three to four hours and allow to cool in the furnace to room temperature. Re-heat to 800-1040°C and again soak for three to four hours. Allow to cool in the furnace to room temperature.Stress Relieving of 1.2378/steel plate d2/die steel
When tools made from 1.2378/steel plate d2/die steel tool steel are heavily machined, ground or otherwise subjected to cold work, the relief of internal strains is advisable before hardening to minimise the possibility of distortion. Stress relieving should be done after rough machining. To stress relieve, heat the component to 600-650°C. Soak well and cool in the furnace or in air. The tools may then be finish machined before hardening.
Hardening of 1.2378/steel plate d2/die steel
It is preferable to heat the tools in a controlled atmosphere. If this is not possible, pack hardening is recommended. A reducing atmosphere is desirable. Pre heat the 1.2378/steel plate d2/die steel tool steel component to 750-800°C. and allow to soak at this temperature. The tools may then be brought up to 1000-1040°C for air cooling, or 980°C for oil quenching. Soak thoroughly at the temperature for thirty minutes per 25mm of ruling section, then cool or quench accordingly. It is important not to exceed 1020°C when heating for hardening.Martempering of 1.2378/steel plate d2/die steel
Martempering is an alternative hardening procedure which may be used when suitable salt bath equipment is available. By this method internal strain, distortion and risk of quench cracking are reduced to the minimum. Pre-heat dry at 300-400°C. Pre-heat in salt at 800-850°C holding in the salt for ten minutes per inch of ruling section. Raise to the hardening temperature of 950-980°C holding in the salt for ten minutes per inch of ruling section. Marquench in salt at 230-250°C holding in the bath for five minutes 25mm of ruling section. Cool in still air. Tempering will be necessary.
Tempering of 1.2378/steel plate d2/die steel
Double tempering is recommended. Tempering of 1.2378/steel plate d2/die steel should be done with the least possible delay after hardening, preferably when the tools are still hand warm. Select a suitable tempering temperature, bearing in mind the service requirements. Heat slowly and uniformly. When the 1.2378/steel plate d2/die steel component has reached the desired temperature, soak for at least one hour per 25mm of section. The second tempering should be a repetition of the first.Heat treatment of 1.2378/steel plate d2/die steel
Heat treatment temperatures, including rate of heating, cooling and soaking times will vary due to factors such as the shape and size of each 1.2378/steel plate d2/die steel component. Other considerations during the heat treatment process include the type of furnace, quenching medium and work piece transfer facilities. Please consult your heat treatment provider for full guidance on heat treatment of tool steels.
Final Grinding of 1.2378/steel plate d2/die steel
Select the correct grade of wheel in consultation with the grinding wheel manufacturer. Ensure the grinding wheel is in good condition by means of a suitable dressing tool. Wet grinding is a preferable option using a copious supply of coolant. If dry grinding is resorted to then use a very soft wheel.
Our services:
1.Sizes material and others are all at your requirements and can be change
2.Price varies on material , dimensions, finished craft and different payments
3.We are direct manufacturer in machinery manufacturing with experience of many years
4.Detailed production design can be made according to the information you offered
5.Each material will be passed the UT test
6.We have an adequate inventory, so that we can effect a quick delivery
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