1.2842 Hot Rolled Stainless Steel Flat Tool Steel Alloy Steel Round Bar

• Type: Steel Plate
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Stainless Steel Scrap
• Technique: Forged
• Shape: Plate
• Surface Treatment: Polished
• Model NO.: Round bar
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Tool Steel Bar
• Transport Package: Wooden
• Specification: 6-400mm
• Trademark: Smooth
• Origin: China
• HS Code: 7214100000
• Production Capacity: 5000 Ton/Year

Product Description

DIN 1.2842/90MnCrV8 STEEL SUPPLY FORM & SIZE & TOLERANCE

Hot Forged Round bar:Φ80-Φ1000mm

Hot Rolled  Round bar:Φ16-Φ130mm

Hot Forged Square bar: Max Thickness:500mm

Flat bar/Blcoks:Thickness :120-800mm ,Width:120-1500mm

Surface Finish	Black-Forged	Black-Rolled	Turned	Grinding	Polished	Peeled	Cold Drawn
Tolerance	(0,+5mm)	(0,+1mm)	(0,+3mm)	Best h9	Best h11	Best H11	Best H11

DIN 1.2842/90MnCrV8 STEEL CHEMICAL COMPOSITION

Grade	C	Si	Mn	P	S	Cr	V
1.2842	0.85-0.95	0.1-0.4	1.9-2.1	≤ 0.03	≤ 0.03	0.2-0.5	0.05-0.15

DIN 1.2842 STEEL RELATED STANDARD & EQUIVALENT GRADE

China:9Mn2V

USA:O2

DIN 1.2842 STEEL FORGING

• Initial Forging Temperature:980-1050ºC
• Final Forging Temperature:800-850ºC
• Forging Ratio:above 4:1
• Cooling Method After Forged:As high carbon tool steel,DIN 1.2842 steel should be annealed after forging.

DIN 1.2842 STEEL HEAT TREATMENT

Critical Temperature for Heat Treatment of  DIN 1.2842 Steel

• Ac1:736ºC
• Ac3:765ºC
• Ar1:652ºC
• Ms:180ºC

DIN 1.2842 Steel Annealing

The general annealing temperature for 1.2842 steel is 750-770ºC with holding time 3-6h.With cooling ratw
below 30ºC/h, cooled to 550-600ºC,then air-cooling.The hardness will be below 229HBW.

While for Isothermal annealing of 1.2842 steel,the heating temperature is controlled at 760-780ºC, and the holding time is 2-3h.
Then the isothermal temperature should be controlled at 680-700ºC with  holding time 3-4h. Cooling at a cooling
rate of ≤30ºC/h to 500-600ºC, finally air cooling.

DIN 1.2842 Steel Quenching & Tempering

Pre-heat Temperature:650ºC

Quenching Temperature:780-820ºC

Quenching Medium:oil

Tempering Temperature:150-200ºC Followed by Quenching

Hardness:60-62HRC