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S20910 (XM-19)
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Introduction:
Compared with the common austenite Cr-Ni stainless
steels, these alloys have higher strength and superior
corrosion capabilities, coupled with non-magnetic
properties, high toughness and superior fatigue resistance.
The compositions of X 3CrNiMnMoNbN 23 17 5 3 and S20910
show some overlap, but there are distinct differences
between the alloys as reflected in their minimum strength
properties (MPa):
| |
UNS
S20910 |
X 3 CrNiMnMoNbN
23 17 5 3 |
| |
Plate |
Sheet |
|
| 0.20% YS |
380 |
415 |
420 |
| Tensile |
690 |
725 |
800 |
|
Produced as flat products, bars, forgings, tube pipe
and fittings.
Metallurgy:
The Mn-N combination is a powerful strengthening addition,
but high Mn may diminish expectations of pitting resistance
and associated properties.
Composition:
| Element |
Minimum
(%) |
Maximum
(%) |
| Chromium |
20.50 |
23.50 |
| Nickel |
11.50 |
13.50 |
| Molybdenum |
1.50 |
3.00 |
| Nitrogen |
0.20 |
0.40 |
| Manganese |
4.00 |
6.00 |
| Carbon |
- |
0.06 |
| Niobium |
0.10 |
0.30 |
| Vanadium |
0.10 |
0.30 |
|
Similiar Specifications:
ASTM UNS S20910 XM-19
20.5-23.5%Cr, 11.5-13.5%Ni,
1.5-3%Mo, 0.2-0.4%N,
4-6%Mn, <0.06%C, 0.1-0.3%Nb, 0.1-0.3%V
DIN/SEW X3 CrNiMnMoNbN 23 17 5 3 1.4565
21-25%Cr, 15-18%Ni, 3-4.5%Mo, 0.3-0.5%N,
4.5-6.5%Mn, <0.04%C, <0.3%Nb
Applications:
Marine, aerospace, chemical and petroleum industries
- pumps,
valves, fittings, fasteners, chains, screens, boatshafting,
non-magnetic equipment.
Product Forms:
Plate, Sheet and Strip
ASTM UNS S20910 XM-19 240, 480
Bar and Long Products
ASTM UNS S20910 XM-19 276, 479, 484
Forgings and Others
ASTM UNS S20910 XM-19 314, 182, 403
Tube
ASTM UNS S20910 XM-19 249, 269
Pipe
ASTM UNS S20910 XM-19 312, 358, 530, 813, 814
General
DIN/SEW X3 CrNiMnMoNbN
23 17 5 3 1.4565 SEW400
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Page Last Modified: 7/04/06 17:47
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