Alloy tool steel T20811 Chemical Composition, T20811 Mechanical Properties, T20811 Heat Treatment

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Data Table for: Steel Grades : Tool Steel And Hard Alloy : T20811

Chemical composition(mass fraction)(wt.%)

0.33～0.43
0.80～1.20
0.20～0.50
≤0.030
≤0.030
4.75～5.50
1.10～1.60
0.30～0.60

Mechanical Properties

Quantity
Value
Unit

Young's modulus
Tensile strength
Elongation
Fatigue
Yield strength

200000 - 200000
650 - 880
8 - 25
275 - 275
350 - 550

Physical Properties

Quantity
Value
Unit

Thermal expansion
Thermal conductivity
Specific heat
Melting temperature
Density
Resistivity

10 - 10
25 - 25
460 - 460
1450 - 1510
7700 - 7700
0.55 - 0.55

e-6/K
W/m.K
J/kg.K
°C
kg/m³
Ohm.mm²/m

Heat Treatment:

Annealing	Quenching	Tempering	Normalizing	Q & T
√	√	√	√	√

Can produce T20811 specifications and size

Steel grade
Specification
Processing range(mm)

T20811
T20811
T20811
T20811
T20811
T20811

Φ1 to Φ2000
10 to 1000
0.08 to 800(T)*10 to 1500(W)*Long
Pipe/tube/slugs/donuts/cubes/other shapes
OD: Φ4-410; WT: 1-35 mm
THK:0.1mm Width:1500mm

Description

Alloy tool steel Annealing hardness HBS: 235
Cold pull hardness HBS: 262
Preheat temperature / ℃ : 788
Quenching temperature / ℃ | salt bath furnaces: 996
Quenching temperature / ℃ | controlled atmosphere furnace: 1010
Holding time/min: 5 to 15
Quenching medium: air cold
Tempering temperature / ℃ : 552
After tempering quartile hardness HRC: 53

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