MATERIAL CATEGORY - Cold work alloy tool steel
Alloy tool steel is widely used to produce the cutting tool, cold/heat distortion mould and measuring implements,
and further to manufacture the piston, valve, valve seat of fuel pump of diesel engine.
Air hammer tools
The alloy is usually produced by EAF /VD /LF followed by electroslag refining (ESR) if necessary for special purpose.
Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different level according to the buyers' requirements.
Bars are usually supplied bright in the softened condition.
Final heat treatment - heat treatment / QT
MATERIAL SPECIFICATIONS - EN ISO 4957: 2000 , DIN 17350 (1980)
Round bar / flat bar / hollow bar / forgings / plate
Bright - peeled + polishing /centerless grinding / peeled + slidabrading
Forged - ring / tube / pipe casing / discs / shaft
PRODUCT PROFILE AND DIMENSIONS
Round bar / Wire rod (Diameter): 5.5mm to 600mm
Square bar / Flat bar: 10mm to 600mm
Plate / Sheet steel / Steel strip: 0.5mm to 500mm
Width: 8mm to 1200mm
Length: random length or based on the customer's special requirements.
Forged steel shape: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
Pipes / Tubings: OD30 - 1300mm, with wall thickness ranging from 15 to 350 mm.
CHEMICAL COMPOSITION ( Mass weight % )
C (％): 0.33 ~ 0.43
Si (％): ≤ 1.00
Mn (％): ≤ 1.00
P (％)≤: 0.030
S (％)≤: 0.030
Cr (％): 15.0 ~ 17.0
Mo (％): 1.00 ~ 1.30
V (％): -
Other (％): Ni ≤ 1.00
MECHANICAL PROPERTIES - HOT WORKING, HEAT TREATMENT AND HARDNESS
Hot working tenperature /℃: 1100 ~ 750
Annealing temperature /℃: 780 ~ 820
Hardness after annealing ≤HBW: 230
Quenching temperature /℃: 1000 ~ 1080
Cooling medium: oil
Common tempering temperature /℃: 650 ~ 700
Hardness after tempering at temperature HRC|100℃: 49
Hardness after tempering at temperature HRC|200℃: 47
Hardness after tempering at temperature HRC|300℃: 46
Hardness after tempering at temperature HRC|400℃: 46
INVENTORY LIST - round bar
Diameter: 120mm, 230mm, 144mm, 205mm
Stock Quantity: 14042 kgs
TECHNICAL SALES ASSISTANCE
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