Aceroinoxidable----Grade H20 Tool Steel (UNS T20820)Introduction
The carbon content in tool steels could vary from as low as zero.1% to as high as quite one.6%, and lots of ar alloyed with alloying parts like metallic element, atomic number 42 and metallic element.
The high quantity of W within the AISI H20 alloy steel provides the utmost resistance to the softening result of elevated temperature and offers glorious wear-resistant properties, as well as withstanding the washing-out result of bound processes. the subsequent article can give an summary of grade H20 tool steels:
Chemical Composition
Theelement composition of H20 tool steels is made public within the following table.
|
Element |
Content (%) |
|
Tungsten, W |
09-Oct |
|
Chromium, Cr |
1.80-2.20 |
|
Vanadium, V |
0.4-0.6 |
|
Carbon, C |
0.25-0.35 |
|
Silicon, Si |
0.10-0.75 |
|
Manganese, Mn |
0.10-0.4 |
Physical Properties
The following table shows the Machinical properties of H20 tool steels
|
Properties |
Metric |
Imperial |
|
Density |
7.8 g/cm3 |
0.281 lb/in3 |
Mechanical Properties
The mechanical properties of H20 tool steels ar displayed within the following tab
|
Properties |
Metric |
Imperial |
|
Tensile strength |
1110 MPa |
160991 psi |
|
Yield strength |
800 MPa |
116030 psi |
|
Young�s modulus |
180 GPa |
26106 ksi |
|
Hardness |
35-42 |
35-42 |
Thermal Properties
The thermal properties of H20 tool steels ar given within the following table
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient |
13 �m/m�C |
5.956 �in/in�F |
|
Thermal conductivity |
15 W/mK |
104 BTU.in/hrft�.�F |
Applications
The following ar the list of applications of H20 tool steels:
Extrusion dies for long production runs
Hot piercing punches
Extrusion mandrels operated while not cooling
Hot shaping dies and inserts
Special steel for springs in operation at elevated temperatures.
Key Words: Stainless Steel Plates, Stainless Sheet 304, aceroinoxidable