Nickle based corrision alloy seamless tube
- Purpose: Used in the chemical and petrochemical industries and marine development and manufacturing of heaters, heat exchangers, evaporators, condensers and pipelines.
- Usage: widely used in manufacturing of petrochemical industry and ocean exploitation such as heater, heat exchanger, evaporator, condensator and line of pipe, etc.
- Order standard standard: ASME SB163/ASME SB167/ASME SB407/ASME SB444/ASME SB622/ ASME SB423/ASME SB829 enterprise standard, technical agreement.
- Available specifications size: hot extrusion tube: outer diameter OD: 48-325mm; wall thickness WT: 4-40mm.
- Cold rolling tube: outer diameter OD: 5.8-273mm; wall thickness WT: 0.3-35mm.
- Delivery condition: hot extrusion; cold rolling; heat treatment.
Chemical composition and performance of main steel grade(trademark)
|
Baosteel |
ASTM UNS |
Chemical composition |
||||||||||
|
C |
Ni |
Cr |
Mo |
Cu |
Fe |
Si |
Mn |
S |
P |
others |
||
|
W% |
||||||||||||
|
BT200 |
≤0.15 |
≥99.0 |
/ |
/ |
≤0.25 |
≤0.40 |
≤0.35 |
≤0.35 |
≤0.010 |
≤0.03 |
/ |
|
|
BT201 |
N02201 |
≤0.02 |
≥99.0 |
/ |
/ |
≤0.25 |
≤0.40 |
≤0.35 |
≤0.35 |
≤0.010 |
≤0.03 |
/ |
|
BT400 |
≤0.30 |
≥63 |
/ |
/ |
28/34 |
≤2.5 |
≤0.5 |
≤2.0 |
≤0.020 |
≤0.03 |
/ |
|
|
BT800 |
N08800 |
≤0.100 |
30.0/ 35.0 |
19.0/ 23.0 |
/ |
≤0.75 |
≥39.5 |
≤1.0 |
≤1.5 |
≤0.015 |
≤0.02 |
Al:0.15/0.60 Ti:0.15/0.60 |
|
BT800H |
N08810 |
0.05/ 0.10 |
30.0/ 35.0 |
19.0/ 23.0 |
/ |
≤0.75 |
≥39.5 |
≤1.0 |
≤1.5 |
≤0.015 |
≤0.02 |
Al:0.15/0.60 Ti:0.15/0.60 Al+Ti≤0.70 |
|
BT800HT |
N08811 |
0.06/ 0.10 |
30.0/ 35.0 |
19.0/ 23.0 |
/ |
≤0.75 |
≥39.5 |
≤1.0 |
≤1.5 |
≤0.015 |
≤0.02 |
Al:0.15/0.60 Ti:0.15/0.60 Al+Ti≤0.85/1.2 |
|
BT600 |
N06600 |
≤0.150 |
≥72.0 |
14.0/ 17.0 |
/ |
≤0.50 |
6.0/ 10.0 |
≤0.5 |
≤1.0 |
≤0.015 |
≤0.03 |
/ |
|
BT690 |
N06690 |
≤0.05 |
≥58.0 |
27.0/ 31.0 |
/ |
≤0.50 |
7.0/ 11.0 |
≤0.5 |
≤0.5 |
≤0.015 |
≤0.03 |
/ |
|
BG2830 |
N08028 |
≤0.03 |
29.5/ 32.5 |
26.0/ 28.0 |
3.0/ 4.0 |
0.6/ 1.4 |
Remaining |
≤1.0 |
≤2.5 |
≤0.03 |
≤0.03 |
|
|
BG2250 |
N06985 |
≤0.015 |
Remaining |
21.0/ 23.5 |
6.0/ 8.0 |
1.5/ 2.5 |
18.0/ 21.0 |
≤1.0 |
≤1.0 |
≤0.030 |
≤0.03 |
W≤1.5 Co≤5.0 Nb+Ta≤0.5 |
|
BT825 |
N08825 |
≤0.050 |
38.0/ 46.0 |
19.5/ 23.5 |
2.50/ 3.50 |
1.5/ 3.0 |
≥22.0 |
≤0.5 |
≤0.5 |
≤0.03 |
≤0.04 |
Al≤0.20 Ti≤0.6/1.2 |
|
BT625 |
≤0.100 |
≥58.0 |
20.0/ 23.0 |
8.00/ 10.0 |
/ |
≤5.0 |
≤0.5 |
≤0.08 |
≤0.015 |
≤0.015 |
Al≤0.40 Ti≤0.40 Nb+Ta:3.15/4.15 |
|
|
BTC276 |
≤0.010 |
Remaining |
14.5/ 16.5 |
15.0/ 17.0 |
/ |
4.0/ 7.0 |
≤0.08 |
≤0.08 |
≤0.03 |
≤0.04 |
W:3.0/4.5 Co≤2.5 V≤0.35 |
|
Grade parallel table
|
Baosteel |
ASTM |
GB |
DIN |
JIS |
|
BT200 |
N02200 |
|||
|
BT201 |
N02201 |
2.4068 |
NW2201 |
|
|
BT400 |
N04400 |
– |
1.1743 |
NW4400 |
|
BT800 |
N08800 |
NS1101 |
1.4876 |
NCF800 |
|
BT800H |
N08810 |
NS1102 |
1.4876 |
NCF800H |
|
BT800HT |
N08811 |
– |
1.4876 |
– |
|
BT600 |
N06600 |
NS3102 |
2.4816 |
NCF600 |
|
BT690 |
N06690 |
NS3105 |
2.4624 |
NCF690 |
|
BG2830 |
N08028 |
– |
– |
– |
|
BG2250 |
N06985 |
– |
– |
– |
|
BT825 |
N08825 |
NS1402 |
2.4858 |
NCF825 |
|
BT625 |
N06625 |
NS3306 |
2.4856 |
NCF625 |
|
BTC276 |
N10276 |
NS3304 |
2.4819 |
NW0276 |
Room-temperature mechanical property
|
Baosteel |
Condition |
Tensile strength Rm,min,MPa |
Yield Strength Rp0.2%,min,MPa |
Elongation A50,min,% |
|
|
BT200 |
solution |
379 |
103 |
40 |
|
|
BT201 |
solution |
345 |
83 |
40 |
|
|
BT400 |
OD≥127mm |
annealing |
480 |
195 |
35 |
|
OD<127mm |
annealing |
480 |
170 |
35 |
|
|
BT800 |
solution |
520 |
205 |
30 |
|
|
BT800H |
solution |
450 |
170 |
30 |
|
|
BT800HT |
solution |
450 |
170 |
30 |
|
|
BT600 |
OD≥127mm |
solution |
550 |
205 |
35 |
|
OD<127mm |
solution |
550 |
240 |
30 |
|
|
BT690 |
solution |
586 |
241 |
30 |
|
|
BT028 |
solution |
500 |
214 |
40 |
|
|
BTG3 |
solution |
621 |
214 |
40 |
|
|
BT825 |
solution |
586 |
241 |
30 |
|
|
BT625 |
annealing |
827 |
414 |
30 |
|
|
solution |
276 |
690 |
30 |
||
|
BTC276 |
solution |
283 |
690 |
40 |
|
Remarks: BT800H, BT800HT grain size 5 or coarser
High temperature mechanical property
|
Baosteel |
Mechanical property |
Condition |
Temperature℃ |
|||||
|
350 |
450 |
550 |
650 |
750 |
850 |
|||
|
BT800H |
Rm,MPa |
Solution |
485 |
490 |
480 |
420 |
270 |
149 |
|
Rp0.2,MPa |
162 |
165 |
169 |
155 |
125 |
95 |
||
|
A4.52,% |
52.5 |
56.0 |
52.5 |
50.0 |
69.5 |
101.5 |
||
|
BT825 |
Rm,MPa |
Solution |
560 |
550 |
527 |
485 |
345 |
197 |
|
Rp0.2,MPa |
205 |
195 |
191 |
169 |
170 |
176 |
||
|
A4.52,% |
47.5 |
51.5 |
49.0 |
52.5 |
64.0 |
92.0 |
||
|
BT625 |
Rm,MPa |
Solution |
– |
– |
– |
610 |
480 |
345 |
|
Rp0.2,MPa |
– |
– |
– |
210 |
225 |
215 |
||
|
A4.52,% |
– |
– |
– |
96.5 |
114.0 |
117.0 |
||
Physical property
|
Baosteel |
Density/g·cm3 |
Metaling rane/℃ |
Coefficient of expansionT |
hermal conductivity W·(m·℃)-1 |
Specific resistance μΩ·m |
Modulus of elasticity GPa |
||
|
100℃ |
300℃ |
25℃ |
300℃ |
20℃ |
||||
|
BT400 |
8.80 |
1300-1350 |
14.2 |
15.2 |
22.0 |
26.9 |
0.51 |
26.0 |
|
BT800 |
7.94 |
1357-1385 |
14.1 |
16.2 |
11.5 |
16.3 |
0.989 |
196.5 |
|
BT600 |
8.47 |
1354-1413 |
10.4 |
14.2 |
14.9 |
19.0 |
1.03 |
214.0 |
|
BT690 |
8.19 |
1343-1377 |
14.06 |
14.53 |
13.5 |
17.3 |
1.148 |
211.0 |
|
BG2830 |
8.0 |
– |
15.0 |
15.9 |
11.4 |
15.3 |
0.99 |
– |
|
BG2250 |
8.14 |
1260-1343 |
14.6 |
14.6 |
10.0 |
15.9 |
1.12 |
199.0 |
|
BT825 |
8.14 |
1370-1400 |
14.1 |
15.3 |
11.1 |
15.4 |
1.13 |
196 |
|
BT625 |
8.44 |
1290-1350 |
– |
– |
9.8 |
14.1 |
1.29 |
204.8 |
|
BTC276 |
8.89 |
1325-1370 |
12.2 |
12.9 |
11.2 |
14.7 |
1.22 |
205 |
Intergranular corrosion resistance
Intergranular corrosion resistance according to ASTM G28 (ferric sulfate- sulfuric acid method)
|
Grade |
Condition |
Time (h) |
Corrosion rate mm/a |
Corrosion depth (μm) |
|
BT800 |
Solution |
120 |
0.42 |
– |
|
BT800H |
120 |
1.464 |
– |
|
|
BT600 |
120 |
0.96 |
– |
|
|
BT825 |
120 |
0.324 |
≤50 |
|
|
BT625 |
120 |
0.535 |
≤50 |
Intergranular corrosion resistance according to ASTM 262 (65% HNO3)
|
Grade |
Condition |
Corrosion rate(mm/a) |
Corrosion rate(mm/a) |
||||
|
1 |
2 |
3 |
4 |
5 |
|||
|
Time/48h |
Time/48h |
Time/48h |
Time/48h |
Time/48h |
|||
|
BT600 |
Solution |
0.288 |
0.30 |
0.324 |
0.432 |
0.528 |
0.371 |
|
BT800H |
0.204 |
0.12 |
0.168 |
0.252 |
1.02 |
0.348 |
|
|
BT825 |
0.348 |
0.204 |
0.24 |
0.192 |
0.312 |
0.264 |
|
|
BT625 |
0.556 |
0.454 |
0.489 |
0.466 |
0.471 |
0.489 |
|
Application of Nickle based corrision alloy seamless tube
- Fluorochemical reactor BT600
-
Polysilicon heater BT800H
-
Petrochemical Air Cooler BT825
Source: China Alloy Seamless Tube Manufacturer – Yaang Pipe Industry Co., Limited (www.epowermetals.com)
(Yaang Pipe Industry is a leading manufacturer and supplier of nickel alloy and stainless steel products, including Super Duplex Stainless Steel Flanges, Stainless Steel Flanges, Stainless Steel Pipe Fittings, Stainless Steel Pipe. Yaang products are widely used in Shipbuilding, Nuclear power, Marine engineering, Petroleum, Chemical, Mining, Sewage treatment, Natural gas and Pressure vessels and other industries.)
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