What is 254SMO Stainless Steel ?
254SMO stainless steel is a super austenitic stainless steel with high corrosion resistance, developed for halide and acid environments, and is widely used in harsh environments such as high-concentration chloride ion media and seawater. In various industrial occasions in acidic media, especially in acids containing halides, 254SMO is far superior to other stainless steels, and in some cases comparable to Hastelloy and titanium.
Equivalent Materials of 254SMO Stainless Steel :
|
Grade |
UNS
No
|
China |
AISI |
DIN |
|
|
GB |
No |
Name |
|||
|
254SMO |
S31254 |
00Cr20Ni18Mo6CuN |
254SMO |
1.4547 |
DIN X1CrNiMoCuN20-18-7 |
254SMO Stainless Steel Chemical Compositions Analysis:
Weight % (all values are maximum unless a range is otherwise indicated)
|
Grade |
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
N |
Ce |
|
254SMO |
0.02 |
1.0 |
0.8 |
0.040 |
0.030 |
19.5-20.5 |
6.0-6.5 |
17.5-18.5 |
0.18-0.20 |
0.03-0.08 |
254SMO Stainless Steel Pipe & Tube Description:
|
Out Diameter(OD): |
NPS 1/8"-3/4”-3”-6”-12”-20”-40”-80", DN6--DN200--DN500-DN2000, 4mm-21.3-48.3-168.3-355.6-508-762-2032mm, 0.375", 0.5", 1", 1.25". |
|
Wall Thickness(W.T.): |
0.7mm-50mm, Sch5S, SCH10S, SCH20, SCH40, Sch80, Sch XXS, 0.035”, 0.065”, 0.083”, 0.89mm, 1.2mm, 1.65mm, BWG, SWG. |
|
Length(L): |
Fixed 6 meters, or other Length as Specified. |
|
End: |
Plain End, Bevel End. |
|
Delivery Condition: |
Annealed and Pickled, Bright Annealed, Polished(400#,600#), Hairline. |
|
Inspection: |
100% PMI, Hydrostatic Test, Eddy Current, Ultrasonic, X-Ray, Penetrant Test. |
|
Mechanical Test: |
Tension Test, Flattening Test, Flaring Test, Hardness Test, Impact Test. |
|
Tolerance: |
According to the Production Standard. |
|
Packing: |
By Bundles, Plywood Cases. |
|
Marking: |
YASE PIPELINE, Material Grade, Standard, Specification, Heat No., Lot No. |
|
Mill Test Certificate: |
According to EN 10204 3.2 |
|
Production Time: |
2-30 Days, or up to the quantity. |
|
Shipping: |
By Sea, By Air, By Express. |
|
MOQ: |
100KGS. |
|
Sample: |
Free samples but freight charge paid by customer. |
|
Customized: |
Available. |
YASE PIPELINE Manufacturing 254SMO Stainless Steel Products:
254SMO Stainless Steel Tubes & Pipes
254SMO Stainless Steel Seamless Pipe & Tubes
254SMO Stainless Steel Welded Pipe & Tubes
254SMO ERW/EFW Stainless Steel Pipe
254SMO Cold Drawing Seamless Stainless Steel Pipe
254SMO Cold Rolling Seamless Stainless Steel Pipe
254SMO Stainless Steel Furnace Tube
254SMO Stainless Steel High Temperature Tube
254SMO Stainless Steel Square & Rectangle Tube
254SMO Stainless Steel Heat Exchanger Tube
254SMO Large Diameter Stainless Steel Pipe
254SMO Heavy Wall thickness Stainless Pipe
254SMO Stainless Steel Mechanical Properties:
Typical Values at 68°F (20℃)
|
Grade |
Tensile Strength (MPa) min |
Yield Strength (MPa) min |
Elongation
(% in 50mm) min
|
Hardness Max |
|
|
HR C |
Brinell (HB) |
||||
|
254SMO |
655 |
310 |
35 |
- |
182 |
254SMO Stainless Steel :
254SMo has very good local corrosion resistance. It has good pitting corrosion resistance (PI≥40) and good stress corrosion resistance under the conditions of seawater, aeration, crevices, and low-speed scouring. It is a Ni-based alloy and titanium alloy. Alternative materials for alloys. Secondly, in terms of high temperature resistance or corrosion resistance, it has better high temperature resistance or corrosion resistance, which is irreplaceable for 304 stainless steel. In addition, from the classification of stainless steel, the metallographic structure of special stainless steel is a stable austenite metallographic structure.
Since this special stainless steel is a high-alloy material, the manufacturing process is quite complicated. Generally, people can only rely on traditional processes to manufacture this special stainless steel, such as infusion, forging, rolling and so on.
254SMO Stainless Steel Pipe Dimension Chart :
|
Nominal
Pipe Size
|
Outside Diameter (mm) |
Nominal Wall Thickness Schedule (mm) |
|||||||||
|
NPS |
DN |
OD |
SCH
5s
|
SCH
l0s
|
SCH
40s
|
STD |
SCH 40 |
SCH
80s
|
SCH XS |
SCH 80 |
SCH XS |
|
1/8 |
6 |
10.3 |
- |
1.24 |
1.73 |
1.73 |
1.73 |
2.41 |
2.41 |
2.41 |
2.41 |
|
1/4 |
8 |
13.7 |
- |
1.65 |
2.24 |
2.24 |
2.24 |
3.02 |
3.02 |
3.02 |
3.02 |
|
3/8 |
10 |
17.1 |
- |
1.65 |
2.31 |
2,31 |
2.31 |
3.2 |
3.2 |
3.2 |
3.2 |
|
1/2 |
15 |
21.3 |
1.65 |
2.11 |
2.77 |
2.77 |
2.77 |
3.73 |
3.73 |
3.73 |
3.73 |
|
3/4 |
20 |
26.7 |
1.65 |
2.11 |
2.87 |
2.87 |
2.87 |
3.91 |
3.91 |
3.91 |
3.91 |
|
1 |
25 |
33.4 |
1.65 |
2.77 |
3.38 |
3.38 |
3.38 |
4.55 |
4.55 |
4.55 |
4.55 |
|
1 1/4 |
32 |
42.2 |
1.65 |
2.77 |
3.56 |
3.56 |
3,56 |
4.85 |
4.85 |
4.85 |
4.85 |
|
1 1/2 |
40 |
48.3 |
1.65 |
2.77 |
3.68 |
3.68 |
3.68 |
5.08 |
5.08 |
5.08 |
5.08 |
|
2 |
50 |
60.3 |
1.65 |
2.77 |
3.91 |
3.91 |
3.91 |
5.54 |
5.54 |
5.54 |
5.54 |
|
2 1/2 |
65 |
73 |
2.11 |
3.05 |
5.16 |
5.16 |
5.16 |
7.01 |
7.01 |
7.01 |
7.01 |
|
3 |
80 |
88.9 |
2.11 |
3.05 |
5.49 |
5.49 |
5.49 |
7.62 |
7.62 |
7.62 |
7.62 |
|
3 1/2 |
90 |
101.6 |
2.11 |
3.05 |
5.74 |
5.74 |
5.74 |
8.08 |
8.08 |
8.08 |
8.08 |
|
4 |
100 |
114.3 |
2.11 |
3.05 |
6.02 |
6.02 |
6.02 |
8.56 |
8.56 |
8.56 |
8.56 |
|
5 |
125 |
141.3 |
2.77 |
3.4 |
6.55 |
6.55 |
6.55 |
9.53 |
9,53 |
9.53 |
9,53 |
|
6 |
150 |
168.3 |
2.77 |
3.4 |
7.11 |
7.11 |
7.11 |
10.97 |
10.97 |
10.97 |
10.97 |
|
8 |
200 |
219.1 |
2.77 |
3.76 |
8.18 |
8.18 |
8.18 |
12.7 |
12.7 |
12.7 |
12.7 |
|
10 |
250 |
273.1 |
3.4 |
4.19 |
9.27 |
9.27 |
9.27 |
12.7 |
12.7 |
15.09 |
12.7 |
|
12 |
300 |
323.9 |
3.96 |
4.57 |
9.53 |
9.53 |
10.31 |
12.7 |
12.7 |
17.48 |
12.7 |
|
14 |
350 |
355.6 |
3.96 |
4.78 |
- |
9.53 |
11.13 |
- |
12.7 |
19.05 |
12.7 |
|
16 |
400 |
406.4 |
4.19 |
4.78 |
- |
9.53 |
12.7 |
- |
12.7 |
21.44 |
12.7 |
|
18 |
450 |
457.2 |
4.19 |
4.78 |
- |
9.53 |
14.27 |
- |
12.7 |
23.83 |
12.7 |
|
20 |
500 |
508 |
4.78 |
5.54 |
- |
9.53 |
15.09 |
- |
12.7 |
26.19 |
12.7 |
254SMO Stainless Steel Tube Dimension Chart :
|
Outside Diameter |
Birmingham Wire Gauge (BWG) |
|||||||
|
20 |
18 |
16 |
15 |
14 |
13 |
|||
|
Inch |
Mm |
|
|
|
|
|
|
|
|
(0.889 Mm) |
(1.245 Mm) |
(1.651 Mm) |
(1.829 Mm) |
(2.108 Mm) |
(2.413 Mm) |
|||
|
Weight, Kg/M (Average Wall ) |
||||||||
|
1/4 |
0.25 |
6.35 |
0.12 |
0.16 |
0.19 |
– |
– |
– |
|
1/3 |
0.313 |
7.95 |
0.15 |
0.21 |
0.25 |
0.28 |
– |
– |
|
3/8 |
0.375 |
9.525 |
0.19 |
0.25 |
0.31 |
0.34 |
0.39 |
– |
|
1/2 |
0.5 |
12.7 |
0.25 |
0.34 |
0.45 |
0.49 |
0.55 |
0.61 |
|
5/8 |
0.625 |
15.875 |
0.33 |
0.45 |
0.58 |
0.64 |
0.71 |
0.8 |
|
3/4 |
0.75 |
19.05 |
0.4 |
0.55 |
0.72 |
0.77 |
0.88 |
0.98 |
|
7/8 |
0.875 |
22.225 |
0.46 |
0.64 |
0.83 |
0.92 |
1.04 |
1.18 |
|
1 |
1 |
25.4 |
0.54 |
0.74 |
0.97 |
1.06 |
1.21 |
1.37 |
|
1 1/8 |
1.125 |
28.575 |
0.61 |
0.83 |
1.1 |
1.21 |
1.37 |
1.56 |
|
1 1/4 |
1.25 |
31.75 |
0.68 |
0.94 |
1.23 |
1.35 |
1.53 |
1.76 |
|
1 3/8 |
1.375 |
34.925 |
0.74 |
1.03 |
1.35 |
1.49 |
1.7 |
1.93 |
|
1 1/2 |
1.5 |
38.1 |
0.82 |
1.13 |
1.49 |
1.64 |
1.87 |
2.17 |
|
1 3/4 |
1.75 |
44.45 |
0.97 |
1.32 |
1.74 |
1.92 |
2.2 |
2.5 |
|
2 |
2 |
50.8 |
– |
1.52 |
1.99 |
2.2 |
2.53 |
2.89 |
|
2 1/4 |
2.25 |
57.15 |
– |
1.73 |
2.26 |
2.48 |
2.87 |
3.26 |
|
2 3/8 |
2.375 |
60.325 |
– |
1.81 |
2.38 |
2.63 |
3.02 |
3.44 |
|
2 1/2 |
2.5 |
63.5 |
– |
1.91 |
2.52 |
2.78 |
3.18 |
3.66 |
|
2 7/8 |
2.875 |
73.025 |
– |
2.2 |
2.9 |
3.2 |
3.68 |
4.2 |
|
3 |
3 |
76.2 |
– |
2.31 |
3.04 |
3.35 |
3.85 |
4.39 |
|
3 1/2 |
3.5 |
88.9 |
– |
2.69 |
3.56 |
3.93 |
4.51 |
5.15 |
|
4 |
4 |
101.6 |
– |
– |
4.11 |
4.54 |
5.21 |
5.95 |
254SMO Stainless Steel Pipe & Tube Dimensions Tolerance Chart:
|
Dimensions
Standard
|
Out Diameter（mm） |
Wall Thickness（%） |
Cutting Length（mm） |
|||
|
Size(mm) |
Tolerance |
Size(mm) |
Tolerance |
Tolerance |
||
|
ASTM213 |
D＜25.4 |
+0.10/-0.10 |
D＜38.1 |
+20/0 |
D＜50.8 |
+3.0/0 |
|
25.4~38.1 |
+0.15/-0.15 |
|||||
|
38.1~50.8 |
+0.20/-0.20 |
|||||
|
50.8~63.5 |
+0.25/-0.25 |
D≥38.1 |
+22/0 |
D≥50.8 |
+5.0/0 |
|
|
63.5~76.2 |
+0.30/-0.30 |
|||||
|
76.2~101.6 |
+0.38/-0.38 |
|||||
|
101.6~190.5 |
+0.38/-0.64 |
|||||
|
190.5~228.6 |
+0.38/-1.14 |
|||||
|
ASTM A269 |
D＜12.7 |
+0.13/-0.13 |
|
+15/-15 |
|
+3.2/0 |
|
12.7~38.1 |
+10/-10 |
|||||
|
38.1~88.9 |
+0.25/-0.25 |
+4.8/0 |
||||
|
88.9~139.7 |
+0.38/-0.38 |
|||||
|
139.7~203.2 |
+0.76/-0.76 |
|||||
|
ASTM A312 |
10.29~48.26 |
+0.40/-0.80 |
|
+12.5/-12.5 |
|
+6.0/0 |
|
48.26~114.30 |
+0.80/-0.80 |
|||||
|
114.30~219.08 |
+1.60/-0.80 |
|||||
|
219.08~457.20 |
+2.40/-0.80 |
|||||
|
ASTM A789 |
D≤12.7 |
+0.13/-0.13 |
|
+15/-15 |
|
+3.0/0 |
|
12.7~38.1 |
+10/-10 |
|||||
|
38.1~88.9 |
+0.25/-0.25 |
+5.0/0 |
||||
|
88.9~139.7 |
+0.38/-0.38 |
|||||
|
139.7~203.2 |
+0.76/-0.76 |
|||||
|
ASTM A790 |
10.29~48.26 |
+0.40/-0.80 |
|
|
|
|
|
48.26~114.3 |
+0.80/-0.80 |
|
|
|
|
|
|
114.3~219.08 |
+1.60/-0.80 |
|
|
|
|
|
|
219.08~457.20 |
+2.40/-0.80 |
|
|
|
|
|
|
JIS G3459 |
D<30 |
+0.30/-0.30 |
S<2 |
+20/-20 |
|
+7.0/0 |
|
D≥30 |
+1%-1% |
S≥2 |
+10/-10 |
|
||
|
EN17455-02 |
10~30 |
+0.30/-0.30 |
S≤3 |
+14/-14 |
1.0~3.0 |
+15.0/0 |
|
30~50 |
+4.00/-4.00 |
S＞3 |
+12/-10 |
|||
|
D＞50 |
+9%/-9% |
|
|
|||
|
EN17456-02 |
6~10 |
+0.20/-0.20 |
0.5~1.0 |
+0.15/-0.15 |
|
+15.0/0 |
|
10~30 |
+0.30/-0.30 |
1.0~3 |
+14/-14 |
|
||
|
30~50 |
+4.00/-4.00 |
S＞3 |
+12/-10 |
|
||
|
D＞50 |
+0.90%-0.9% |
|
|
|
||
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