Alloy 254 Seamless Pipe
Outside Diameter: 6.0 - 630mm
Wall Thickness:0.3 - 50 mm
Length:Single, Double Random & Cut Length
UNS S31254 Welded Pipe
Outside Diameter: 6.0 - 630mm
Wall Thickness:0.3 - 50 mm
Length:up to 26 Meters
WNR 1.4547 Thick-Walled Pipe
Outside Diameter: 10-600mm
Wall Thickness: 2.5 - 100mm
Length: 0.5- 12 meter
Form: Round, Square, Rectangle etc.
ASTM A312 | ASME SA 312
UNS: S31254
WNR: 1.4547
254 SMO Pipe
Density:8 g/cm3
Melting Point:1320-1390°C
Temprature Range:1149–1204°C (2100–2200°F)
End: Plain and Beveled
CHEMICAL COMPOSITION:
|
Chemical composition (nominal) % |
|||||||||
|
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Mo |
N |
Cu |
|
≤0.020 |
≤0.80 |
≤1.00 |
≤0.030 |
≤0.010 |
20 |
18 |
6.1 |
0.20 |
0.7 |
MECHANICAL PROPERTIES:
The following figures apply to solution annealed condition seamless tube and pipe.
|
Metric units, at 20°C |
||||||
|
Wall thickness |
Proof strength |
Tensile strength |
Elong. |
Hardness |
||
|
|
Rp0.2a) |
Rp1.0a) |
Rm |
Ab) |
A2" |
HRB |
|
mm |
MPa |
MPa |
MPa |
% |
% |
|
|
<5 |
≥310 |
≥340 |
675-850 |
≥35 |
≥35 |
≤96 |
|
>5 |
≥310 |
≥340 |
655-850 |
≥35 |
≥35 |
≤96 |
1 MPa = 1 N/mm2
|
Imperial units, at 68°F |
||||||
|
Wall thickness |
Proof strength |
Tensile strength |
Elong. |
Hardness |
||
|
|
Rp0.2a) |
Rp1.0a) |
Rm |
Ab) |
A2" |
HRB |
|
inch |
ksi |
ksi |
ksi |
% |
% |
|
|
<0.187 |
≥45 |
≥49 |
98-123 |
≥35 |
≥35 |
≤96 |
|
>0.187 |
≥45 |
≥49 |
98-123 |
≥35 |
≥35 |
≤96 |
a) Rp0.2 and Rp1.0 correspond to 0.2% offset and 1.0% offset yield strength, respectively.
b) Based on L0 = 5.65 √S0 where L0 is the original gauge length and S0 the original cross-section area.
Impact strength
Due to its austenitic microstructure, Sandvik 254 SMO has very good impact strength both at room temperature and at cryogenic temperatures.
Tests have demonstrated that the steel fulfils the requirements (60 J (44 ft-lb) at -196 oC (-320 oF)) according to the European standards EN 13445-2 (UFPV-2) and EN 10216-5.
At high temperatures
Intermetallic phases are precipitated within the temperature range of 600–1000°C (1110–1830°F). Therefore, the steel should not be exposed to these temperatures for prolonged periods.
|
Metric units |
||
|
Temperature |
Proof strength |
|
|
°C |
Rp0.2 |
Rp1.0 |
|
|
MPa |
MPa |
|
|
min. |
min.
|
|
100 |
230 |
270 |
|
200 |
190 |
225 |
|
300 |
170 |
200 |
|
400 |
160 |
190 |
|
500 |
148 |
180 |
|
Imperial units |
||
|
Temperature |
Proof strength |
|
|
°F |
Rp0.2 |
Rp1.0 |
|
|
ksi |
ksi |
|
|
min. |
min.
|
|
200 |
34 |
40 |
|
400 |
27 |
32 |
|
600 |
24 |
29 |
|
700 |
24 |
28 |
|
900 |
22 |
26 |
25th floor, C3 Building, Wanda Plaza, Kaifu District, Changsha, Hunan Province, China
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