1.4021, X20Cr13, AISI420 Martensitic Stainless Steel ( EN10088)
Similar Grade: 1.4021, X20Cr13, AISI420
Shape: Round, Flat, Square.
Size Range:
Frame
Processing
Shape |
Round |
Flat |
Square |
| Thickness |
Width |
Rolling |
12-130mm |
4-150mm |
100-900mm |
-
|
Forging |
50-1000mm |
70-800mm |
300-2000mm |
70-1000mm |
Steel-making Condition: EF, EF/EAF+LF+VD, EF/EAF+ESR
Delivery Condition:
Annealed , Quenched + Tempered
Surface Condition:
Black, Grinded, Peeled, Rough turned, Polished
Features:
1.Competitive price
2.Immediate delivery
3.Premium quality
4.Reliable service
5.MOQ: 1 Ton
| Packing details |
In seaworthy packing, as your requirement. |
| Delivery details |
within 30-50 days |
Chemical Composition:
| Grade |
C |
Mn |
P |
S |
Si |
Cr |
| 1.4021 |
0.16-
0.25 |
1.50
max |
0.040
max |
0.030
max |
1.00
max |
12.00-
14.00 |
General properties:
corrosion resistance low
mechanical properties average
forgeability poor
Weldability with care
machinability good
Mechnical Properties:
density (kg/dm3) 7.70
electrical resistivity at 20 °C ( mm2/m) 0.60
magnetizability possible
thermal conductivity at 20 °C (W/m K) 30
specific heat capacity at 20 °C (J/kg K) 460
thermal expansion (K-1) 20 - 100 °C: 10.5 x 10-6
20 - 200 °C: 11.0 x 10-6
20 - 300 °C: 11.5 x 10-6
20 - 400 °C: 12.0 x 10-6
Applications:
automotive industry
petrochemical industry
electronic equipment
mechanical engineering
cutlery and blades
Product Description:
1.4021 can be hardened by holding at a temperature between 950 °C - 1050 °C followed by cooling in air or oil. The tempering temperature is dependent on the desired strength. Due to the precipitation of undesirable phases, the temperature range 400 °C to 600 °C should be avoided. Two heat treated conditions are usually specified, namely: QT700 (tempered between
650 °C and 750 °C) and QT800 (tempered between 600 °C and 700 °C). The number behind the designation QT relates to the minimum tensile strength
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