TP 904L • UNS N08904 • 1.4539 • TPS-Technichromo 904L
This high-alloy austenitic is very resistant to attack from diluted sulphuric acid, phosphoric acid and acetic acid. It resists pitting in neutral chloride solutions. Its resistance to stress corrosion cracking in some hot chlorides is much superior to that of the lower nickel austenites. This steel has good formability and weldability. This material is present in all common standards like ASTM and EN, however with some differences. Design stresses up to 370°C are included in ASME II.
Material grade | Norm | C max. |
Si max. |
Mn max. |
P max. |
S max. |
Cr | Ni | Mo | Ti | others |
---|---|---|---|---|---|---|---|---|---|---|---|
1.4539 | EN 10216-5 | 0,020 | 0,70 | 2,00 | 0,030 | 0,010 | 19,00 - 21,00 | 24,00 - 26,00 | 4,00 - 5,00 | Cu 1,20 – 2,00; N 0,15 max. | |
1.4539 | VD-TÜV 421 | 0,020 | 0,70 | 2,00 | 0,030 | 0,015 | 19,00 - 21,00 | 24,00 - 26,00 | 4,00 - 5,00 | Cu 1,20 – 2,00; N 0,04 -0,15 max. | |
N08904 | ASTM A 213 | 0,020 | 1,00 | 2,00 | 0,040 | 0,030 | 19,00 - 23,00 | 23,00 - 28,00 | 4,00 - 5,00 | Cu 1,00 – 2,00; N 0,10 max. |
Material grade | Norm | Rp 0,2 MPamin. | Rp 1,0 MPamin. | Rm MPa min. max. |
A min.% |
Hardness HRB max. |
Heat treatment |
---|---|---|---|---|---|---|---|
1.4539 | EN 10216-5 | 230 | 250 | 520 - 720 | 35 | solution annealed | |
1.4539 | VD-TÜV 421 | 230 | 260 | 530 - 720 | 35 | solution annealed | |
N08904 | ASTM A 213 | 215 | 490 | 35 | 90 | solution annealed |
Rp 0,2 = Rotation
Rp 1,0 = Yield Strength
Rm = Tensile Strength
A = Elongation
OD - Tube | OD | WT | special WT | ID |
---|---|---|---|---|
ab Ø4,55 mm | ±0,050 mm | ±0,150 mm | ±0,100 mm | X |
ab Ø9,53 mm | ±0,050 mm | ±0,100 mm | ±0,080 mm | ±0,050 mm |
ab Ø30,00 mm | ±0,100 mm | ±0,150 mm | ±0,050 mm |
* Dimensions not shown on request
WD | [mm] | 1,00 | 1,20 | 1,24 | 1,30 | 1,40 | 1,50 | 1,60 | 1,65 | 1,82 | 2,00 | 2,11 | 2,20 | 2,30 | 2,35 | 2,41 | 2,64 | 2,77 | 2,80 | 3,00 | 3,20 | 3,25 | 3,50 | 3,60 | 3,85 | 3,91 | 4,00 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
AD | [inch] | 0,048 | 0,065 | 0,072 | 0,083 | 0,093 | 0,095 | 0,104 | 0,109 | 0,126 | 0,128 | 0,154 | ||||||||||||||||
[mm] | [inch] | |||||||||||||||||||||||||||
8,00 | ||||||||||||||||||||||||||||
9,00 | ||||||||||||||||||||||||||||
9,53 | 0,375 | |||||||||||||||||||||||||||
10,00 | ||||||||||||||||||||||||||||
11,00 | ||||||||||||||||||||||||||||
12,00 | ||||||||||||||||||||||||||||
12,70 | 0,500 | |||||||||||||||||||||||||||
13,00 | ||||||||||||||||||||||||||||
14,00 | ||||||||||||||||||||||||||||
15,00 | ||||||||||||||||||||||||||||
15,88 | 0,625 |