4Cr13 steel bar

4Cr13/40Cr13/X40Cr13/1.2083/420/Z40C14/40Ch13//420J2 1.Dia 50mm-1500mm 2.Process: EAF+LF+VOD+Forged Treatment(optional)

4Cr13/40Cr13/X40Cr13/1.2083/420/Z40C14/40Ch13//420J2   Applications

Moulds for corrosive plastic materials such as PVC, recycled polymers etc., moulds for chemically aggressive plastics and plastics containing abrasive fillers, mould inserts, dies and gauges for PVC extrusions, screws and barrels for extruders, moulds for automotive, food, medical and optical industry such as spectacles, compact discs, lenses.

RELATED SPECIFICATIONS:

     

Germany       DIN X40Cr13

                        Wr.N 1.2083       

USA          ASTM 420

France        AFNOR Z40C14

Russia       GOST 40Ch13

Japan        JIS SUS420/420J2  

Chemical Composition (%): 

Carbon       0.36-0.45 

Silicon        0.60 max  

Manganese    0.80 max

Phosphorus    0.035 max 

Sulphur       0.030 max 

Chromium    12.50-14.50

 Nickel       0.60 max 

Process:  EAF+LF+VOD+Forged Treatment(optional)

SIZE RANGE: 

Round:   

Hot Forged:  50mm-1500mm 

Flat:

Hot forged: Thickness:50-600mm Width: up to 1600mm 

SURFACE FINISHES: 

Black, Peeled(K12), Cold Drawn, Turned & Polished(H10, H11), Precision Ground(H9, H8)

Test: Ultrasonic test according to SEP 1921-84 C/c

 

Heat Treatment

ANNEALING: heat to750-800°C, with hold at minimum rate for 3 hours;Furnace cooling.Stress relieving: To be carried out after machining and before the final heat treatment,-Heating to600-650°C , for 2 hours ;Hardening ;-preheating to 600-700°C;-Austenitizing at 990-1040°C;-Cooling in fluid oil, thermal bath at 500-550°C and finally in oil,considering the steel shape and size.Quenched hardness52-56HRCTempering:To be carried out after the hardening according to the required hardness; at 170-270°C in order to match hardness and resistance to corrosion; permanence for at least 2 hours;Tempering must be repeatedat least twice at a temperature 30°C lower than the previous. Cooling in air.

Certificate of Quality: issued in English, in addition the normal terms, production process, the mechanical property yield strength, tensile strength, elongation and hardness, forged ratio, UT test result, Grain size, heat treatment methods and the sample of is shown on the Certificate of Quality.

Marking: Heat No. will be cold stamped and Steel grade, diameter mm, length mm, and  the manufacturer LOGO and weight kg is painted.

4Cr13 steel bar