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Specifications
1. UNS S31500 stainless steel2.duplex stainless steel-In the alloy
3.00Cr18Ni5Mo3Si2
4.UNS S31500
UNS S31500 stainless steel - duplex stainless steel
Duplex stainless steel is ferrite in the solid solution phase austenite meet each half, general ShaoXiang content also needs to be reached to 30%. In the case of contain low C, Cr content was 18% ~ 18%, the Ni content in 3% ~ 10%. Some steel containing Mo, Cu, Nb, Ti, N and alloy elements. This kind of steel both austenitic and ferritic stainless steel, the characteristics of plasticity and toughness is higher, compared with that of ferrite no brittleness at room temperature, the intergranular corrosion resistance and welding performance were significantly increased, while maintaining a ferritic stainless steel 475 °C brittleness and high thermal conductivity, has the characteristics of superplasticity. Compared with austenitic stainless steel, high strength and resistance to intercrystalline fushi is obviously enhanced and the resistance to chloride stress corrosion. Duplex stainless steel has good resistance to pitting corrosion performance, is also a kind of nickel and stainless steel.
S31500 duplex stainless steel chemical composition and Mechanical properties
1.chemical component (%)
|
grade of steel
|
C≤ |
Mn≤ |
Si≤ |
S≤ |
P≤ |
Cr |
Ni |
Mo |
Cu≤ |
N |
|
S32750((SAF2507) 00Cr22Ni7Mo4N |
0.03 |
1.20 |
0.80 |
0.020 |
0.035 |
24.0/ 26.0 |
6.0/ 8.0 |
3.0/ 5.0 |
0.50 |
0.24/ 0.32 |
|
S31803(SAF2205) 00Cr22Ni5Mo3N |
0.03 |
2.00 |
1.0 |
0.02 |
0.030 |
21.0/ 23.0 |
4.50/ 6.50 |
2.50/ 3.50 |
0.08/ 0.20 |
|
|
S31500(3RE60) 00Cr18Ni5Mo3Si2 |
0.03 |
1.2/ 2.00 |
1. 4/ 2.00 |
0.030 |
0.030 |
18.0/ 19.0 |
4.25/ 5.25 |
2.50/ 2.00 |
0.05/ 0.10 |
2.Mechanical properties
Duplex stainless steel mechanical properties:
strength of extension σb (MPa):≥590
offset yield strength σ0.2 (MPa):≥390
elongationδ5 (%):≥20
percentage reduction of area ψ (%):≥40
hardness :≤30HRB;≤300HV
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