Shanghai Unite Steel Trading Co.,Ltd.
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Description 4Cr13/40Cr13/X40Cr13/1.2083/420/Z40C14/40Ch13//420J2 :
Products Name: 4Cr13/40Cr13/X40Cr13/1.2083/420/Z40C14/40Ch13//420J2
Brand name: Unite Steel
Place of Origin: Hubei, China (Mainland)
Price Terms: FOB
Minimum Order: 10 Metric Ton/Metric Tons
Payment Terms: L/C
Delivery Lead Time: 10 -45 days after sign the contract
Supply Ability: 5000 Metric Ton/Metric Tons / Month
Quality/ Certificates:
Inner packing: Seaworthy Package
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 hardness52-56HRC
Tempering:
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.