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Product Details:
Payment & Shipping Terms:
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| Standard: | AISI, ASTM, DIN, GB，JIS，BS | Test: | SGS /UT 100% / Element Testing |
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| Delivery Condition: | Forged Or Hot Rolled | Heat Treatment: | Annealed / Q+T |
| Shape: | Plate / Block | Service: | Sample Free And 24 Hours Online |
| High Light: | alloy steel flat bar,tool steel flat bar |
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Hot Rolled Alloy Steel Flat Bar 1.2738 AISI P20+Ni 718H Black Surface
DIN 1.2738 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. DIN 2738 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.
Pre-hardened large size injection mould, can be pollished normally.Used for making high demand large size plastic mould.
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. Available Size (mm)
| Flat Bar Size(mm) | Round bar Size(mm) | |||
| Thickness | Width | Length | Diameter | Length |
| 21-300 | 155-2200 | 2000-6000 | 20-200 | 2000-6000 |
4, Grade
| GB | AISI | DIN |
| 3Cr2NiMnMo | P20+Ni | 1.2738 |
5, 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 |
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: Standard export packing or As per request.
9, Delivery:
Abundant stock, 7-15 days.
Customized products, 30-50 days.
10, The process flow
a, Hot rolled or forged condition, Pre-harden &tempering , black surface
b, Hardness: 30~36HRC
c, Hot rolled technology:EAF+LF+VD
d, Forged technology: EAF+LF+VD+ESR+Forging +Q T + Machined surface
Contact Person: Ms. Echo
Tel: +86 18148729336
Fax: +86-020-8251-5866
