1.2738 718H P20+Ni Plastic Mould Steel Sheet and Flat Bar of Special Steel
1.2738 P20+Ni 3Cr2NiMnMo is a 300HB (30HRC) pre-hardened grade specially designed for plastic mold industry. Chromium, Molybdenum, Nickel carbon and manganese additions are optimized to have a fully martensite-bainite microstructure after quenching. The high nickel content (1%) is specially adapted to ensure a perfect homogeneity of structure and hardness through thickness even for very thick blocks (up to 700mm/28"). The steel is melted in electrical furnace and refined with VOD or DH device The cleanliness of the steel is guaranteed as well as the soundness. This makes the steel particularly well adapted for mold even when polishing or chemical etching are required for surface finish quality.
1.2738 P20+Ni 3Cr2NiMnMo is specially used for Plastic injection die moulds. The characteristics of a material are right sharpening, photo-etching properties with high purity and good homogeneity. 1.2738 P20+Ni 3Cr2NiMnMo is upgraded version of plastic mold steel 0f 2311, which normally supply in Pre hardened condition. Hardness in as supplied condition 280-320 HB with having uniform hardness. The additional nickel content of 1 % increases through hardening. It has good machinability, suitable for Texturing, fine polishability, adequate corrosion resistance, vacuum-degassed steel.
Compare with P20,1.2311 and 3Cr2Mo, 1.2738 P20+Ni 3Cr2NiMnMo will more suitable for larger size plastic parts injection operation,
Application
1.2738 P20+Ni 3Cr2NiMnMo is applicable for large & small plastic mould dies for Automotive Industries, Dies for Domestic goods , High finishing plastic Die, Boaster Plates of Presses, Die Holders & Shoe blocks for drop Hammers, Press Cassettes , Upsetter Blocker, forging dies, Different dies & mold for plastic products etc.
1, Features
a,uniform hardness qualitative of Material;
b,No quenching crack danger,Without heat treatment costs that can reduce the tool cost;
c,Excellent polishing performance;
d,Good machining performance;
2, Application
Used for various large -sized mirror plastic mould,percision mould;
a,Leather grain, pear skin grain etching, imitation stone moulds;
b,Clear plastic container classes such as pencil case, commodity high gloss mould;
c,Such as refrigerator, air conditioner production to demand higher large mould;
3, Grade
| GB |
AISI |
DIN |
| 3Cr2NiMnMo |
P20+Ni |
1.2738 |
4, Chemical composition(%)
| C |
Mn |
Si |
Cr |
Ni |
Mo |
P |
S |
| 0.35-0.45 |
1.30-1.60 |
0.20-0.40 |
1.80-2.10 |
0.90-1.20 |
0.15-0.25 |
≤0.03 |
≤0.03 |
5, Availabe Size (mm)
| Grade |
Size(mm) |
| 1.2738 Plate |
Thickness |
Width |
Length |
| 21-300 |
2200 |
5800 |
6, Mechanical Properties
| Hardness |
Y.S.(0.2%) |
UTS |
Elongation |
RoA |
Elastic Modulus |
| HB |
Mpa |
KSI |
Mpa |
KSI |
% |
Z% |
GPA |
KSI |
| 300 |
826 |
120 |
993 |
145 |
17 |
59 |
205 |
29745 |
7, Hardness: 33-37HRC
8, Packing & Loading: Export Standard Packing or Customers' request
9, Delivery Date
For abundant stock, 7-15 days.
For customized products, 30-50 days.
10,The process flow
1)Hot rolled or forged condition, Pre-harden &tempering , black surface
2)Hardness: 33~37HRC
3) Hot rolled technology:EAF+LF+VD
Forged technology: EAF+LF+VD+ESR+Forging +Q T + Machined surface
Company Profile
Guangzhou ChangFeng Steel Co.,Ltd, is located in Guangzhou city, it was established in 2012,and is an Professional import and export company with ten years experience of selling special steel, which mainly sells plastic die steel, hot work die steel, cold work mould steel, alloy structural steel, bearing steel, tool steel, stainless steel, carbon steel, etc. We also act on behalf of exporting steels of mainly steel factories in China, including Baogang group,Shagang group, Wenfeng group, Xingcheng group, Dongte group, Daye and so on. We are full of export experience to the market all over the word, such as America, Germany, France, Italy, Turkey, Singapore, Thailand, Malaysia, Vietnam, Taiwan, and Middle-East.
At the same time,We offer the seamless steel pipe, welded carbon steel pipe, GI pipe, and special pipe. Fittings elbow, tee, reducer, cap, lap joint, flanges etc.. This is better for our customer to buy the different products from china, while they are saving their time, but they can enjoy in our best serves.
Guangzhou ChangFeng Steel co., Ltd has a lot of experienced and competent elites and is capable of offering the best service after years of development. Our company equips with large-sized Vertical saw machines, Horizontal saw machines, Milling machines, Grinding machines and other advanced equipments to provide customers with cutting and other processing services. Our all products should be inspected the metallographic analysis, hardness, ultrasonic flaw detection and other strict inspection processes, which meet the standards of DIN, AISI, JIS and GB to ensure their function and quality.
Our company keeps the principle of "sincerely cooperation, endless striving for perfection".We desire to establish the long-term mutual beneficial and win-win relation with importers all over the word.
We have advanced technology of management, we win the trust because of our good quality.
We have clannish conscientious and passionate salesman, we gladden and steady the customers with our best service.
We are pure-hearted and awaiting for your kind attention to our company.
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