Pre-hardened HRC33-37 Plastic Mould Steel Die Block 1.2738 718

• Standard: DIN, JIS, AISI, ASTM, GB, BS
• Technics: Forged
• Application: Die Steel Bar
• Surface: Black
• Alloy: Alloy
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Free Cutting Steel, Mold Steel
• Model NO.: 718/P20+Ni/1.2738/3Cr2NiMnMo
• Delivery condition: Pre-hardened HRC33-37
• Thickness: 20-500mm
• Quality Assurance: 100% UT passed
• Delivery Time: 7 days
• Condition: stock
• Transport Package: Standard/Customized
• Specification: standard/customized
• Trademark: customized
• Origin: China
• HS Code: 7225
• Production Capacity: 1000 Tons/ Month

Product Description

Pre-hardened HRC33-37 Plastic Mould Steel Die Block 1.2738 718 

1. Product Introduction
  1) 2738 is a hardened and tempered, not corrosion resistant plastic mould steel. Because of the Ni-addition, there is no hardness decrease in the center of large sizes (up to 600 mm). A special melting technology offers good machinability.

  2) 2738 is in the class of Plastic mold that was develoed from 2311 by adding Nickel 1.0 Selling condition is quench and tempered So, free from size changing after hardening Hardness range is 280-325 HB (29-34 HRC).

2. Features
Good polishing and photo-etching properties
Good machinability
High purity and good homogeneity
Uniform hardness
No hardening risks
No hardening costs
Time saving (i.e., no waiting for heat treatment)
Lower tool cost (e.g., no distortion to rectify)
Modifications easily carried out
Can be subsequently nitrided to increase surface wear resistance and locally flame hardened to reduce surface damage.

3. 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

4. Similar Standards

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

5. 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

6. 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

7. Applications
2738 is a tool steel for plastic mold that posses high hardening ability and sell in harden and temper condition
Hardness is in range 1000 N/mm² suitable for big size plastic mold thickner than 400 mm
Good for making tool in steel forming
Production through vacuum degassin process of steel making
High performance in polishing, machining, texturing
Sample of usage are as below
Blow / injection plastic mold especially thermo plastic that is free from abrasive
Mold frames for plastic mold and die casting mold
Sleeves and die holder for extrusion
8. Product picture