Cold Work Tool Steel A4 Steel Bar

• Type: Round
• Standard: AISI, ASTM
• Composition: Ferrous Steel Scrap
• Technique: Rolled, Forged
• Shape: Round, Flat
• Surface Treatment: Black, Grinded, Peeled, Rough Turned, Polished
• Model NO.: A4
• Special Use: Mold Steel
• Application: Tool Steel Bar
• Size Range: Dia 20-480 mm
• Surface Condition: Black, Grinded, Peeled, Rough Turned, Polished
• Delivery Condition: Annealed, Quenched + Tempered
• Steel-Making Condition: Ef, Ef/Eaf+Lf+Vd, Ef/Eaf+ESR
• Transport Package: Seaworthy Packing
• Specification: A4
• Trademark: FUSHUN
• Origin: Huangshi
• HS Code: 7228600000
• Production Capacity: 500tons Per Month

Product Description

Shape: Round, Flat, Square.
Size Range:
 

	Diameter(mm)	Thickness (mm)	Width (mm)	Length(mm)
Round	50-420	-	-	2000-5800
Square	50-420	-	-	2000-5800
flat	-	20-50	80-600	2000-5800

Steel-making Condition: EF, EF/EAF+LF+VD, EF/EAF+ESR

Delivery Condition:
Annealed , Quenched + Tempered

Surface Condition:
Black, Grinded, Peeled, Rough turned, Polished

Features:
1.Competitive price
2.Immediate delivery
3.Premium quality
4.Reliable service
5.MOQ: 1 Ton
 
 

Packing details	In seaworthy packing, as your requirement.
Delivery details	within 30-50 days

Chemical Composition:
 

C	Mn	P	S	Si	Cr	Mo
0.95-1.05	1.80-2.20	0.030max	0.030max	0.10-0.70	0.90-2.20	0.90-1.40

 

Heat treatment:
Hardness :Annealed(+A) max: 241 BHN

Tool steel A4 when heat-treatment the preheat Temperature need reach 677°C, and the temperature may be ± 14 °C .

Tool steel A4 when austenitizing ,should keep 5-15 minutes long. If is the salt bath ,temperature should keep in the 843 °C, and shall be ± 5.6 °C. Or is the controlled atmosphere furnaces, temperature should keep in the 857 °C, and shall be ± 5.6 °C.

Quenching: Tool steel A4 Hardening quenching using air cooling, and it's hardness min is 61 RC.

Tempering: Tool steel A4 general tempering temperature is 204°C. Double tempering of Double tempering of tool steel A4 is recommended.
 
Ultrasonic Test:Material will be ultrasonically tested at appropriate stages of the manufacture to ensure the quality, as agreed between seller and purchaser.