2021-02-03 10:42:28 Origin： Remark：0 Click：
TECHNICAL SPECIFICATION MATERIAL DATASHEET - UNS T20823
Si (％): 0.15 ~ 0.60
Mn (％): 0.15 ~ 0.40
P (％)≤: 0.030
S (％)≤: 0.030
Cr (％): 11.0 ~ 12.75
Mo (％): -
W (％): 11.0 ~ 12.75
HEAT TREATMENT PRACTICE AND HARDNESS
Hot working tenperature ℃ /Starting: 1070~1180
Annealing temperature ℃: 870~900
Hardness after annealing ≤HBW: 213~255
Quenching temperature ℃: 1200~1270
Cooling medium: air/oil
Tempering temperature ℃: 650~810
Hardness value after tempered /HRC: 47~30
This alloy is generally smelt in electric arc furnace (EAF ) or IFF + VD, LF + Electroslag remelting (ESR). For a purpose of higher quality, it should be smelt via technology of vacuum refining.
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 preheating of measuring and cutting tool steel is spheroidizing annealing, final heat treatment is quenching + low temperature tempering and hardness after heat treatment can reach 60~65HRC. When heat treat tool steel grades consideration should be given to hardening temperature, including ratio of heating, cooling and soaking times which will differ due to factors such as the shape and size of each chemical component. Other considerations during heat treatment include the type of furnace, quenching medium and work piece transfer facilities.
Round bar / Wire rod (Diameter): 5.5mm to 500mm
Square bar / Flat bar: 3mm to 800mm
Length: Fixed length or random length or based on the customer's special requirement.
Heavy/middle plate via hot rolled: T60 - 400mm X W80 - 1200mm X L1000-12000mm
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.
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