718/DIN1.2738/AISI P20+NI/GB 3CrNiMnMo Plastic Mould Die Alloy Steel

• Standard: DIN, JIS, AISI, ASTM, GB, BS
• Technics: Hot Rolled
• Application: Die Steel Bar
• Surface: Black
• Alloy: Alloy
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Free Cutting Steel, Mold Steel
• Model NO.: 718H / P20+Ni/ 1.2738 / 3Cr2NiMnMo
• Delivery condition: 33-37HRC
• Thickness: 20-800mm
• Surface condition: black
• Quality Assurance: 100% UT passed
• Delivery Time: 7 Days
• Condition: stock
• Transport Package: Standard/Customized
• Specification: standard/customized
• Trademark: customized
• Origin: China
• HS Code: 7225401000
• Production Capacity: 1000 Tons/Month

Product Description

718/DIN1.2738/AISI P20+NI/GB 3CrNiMnMo Plastic Mould Steel 

1. Similar Standards

Chinese	American	German	Japanese	Swedish
GB	AISI	DIN	JIS	ASSAB
3Cr2NiMnMo	P20+Ni	1.2378	PDS5S	718

2. Chemical Composition

Grades	C	Si	Mn	P	S	Mo	Ni
1.2738	0.35-0.46	0.2-0.4	1.3-1.6	≤0.035	≤0.005	0.15-0.25	0.9-1.2
718/3Cr2NiMnMo	0.28-0.40	0.2-0.8	0.6-1.0	≤0.030	≤0.030	0.30-0.55	0.8-1.2
P20+Ni	0.32-0.40	0.2-0.4	1.0-1.5	≤0.030	≤0.035	0.30-0.55	0.8-1.2

3. Heat Treatment

Quenching			Tempering
Heating Temperature/ºC	Cooling	Hardness/HRC	Heating Temperature/ºC	Cooling	Hardness/HRC
840-870	Air	≥50	550-640	Air	28-36

4. Stock Size

steel plate	Hot Rolled	Thickness	20-150mm
		Width	2200mm
		Length	2000-8000mm
	Hot Rolled	Thickness	155-300mm
		Width	1600mm
		Length	4000-8000mm
steel block	Thickness	300-1000mm
	Width	800-1600mm
	Length	2000-6000mm

5. Product Introduction
718H is a vacuum-melting chromium-nickel-molybdenum alloy steel that has been hardened and tempered before it leaves the factory. It offers the following advantages: No risk of quench cracking and heat treatment; no need for heat treatment; shorten the cycle time; Cost (for example, without overseas Chinese is deformation); easy to amend the mold; nitriding and surface hardening can be applied to improve the mold surface hardness and wear resistance.

718H steel is pre-hard mirror anti-acid plastic mould steel. The steel pre-hardened, uniform material, high cleanliness, excellent polishing performance and lithography. Also has high hardenability, good electrical processing performance and striae processing performance. Pre-hardened steel without quenching can also be used for the mold bore, flange flame hardening can be implemented, the hardness can be increased to 52HRC.

6. Features

1. Good machining performance  
2. Excellent polishability
3. Uniform hardness
4. High hardenability

7. Applications

1. Skin, pear skin, imitation stone etching mold.
2. Transparent plastics such as pencil cases, daily necessities containers, high gloss requirements mold.
3. Particularly suitable for hard rubber (PS) and non-fragmented rubber (ABS) parts.
4. Automobile bumpers, interior parts, refrigerators, air conditioners, etc.  

8. Product photos