Return to list page
Equivalent designations
UNS R30556
|
Form |
ASTM |
|
Rod |
B 572 |
|
Plate, sheet and strip |
B 435, B 906 |
|
Seamless pipe and tube |
B 622 |
|
Welded pipe |
B 619, B 775 |
|
Welded tube |
B 626, B 751 |
|
Welding fitting |
B 366 |
|
Billet and bar for reforging |
B 472 |
Chemical composition
|
% |
Fe |
Cr |
Ni |
Co |
Mo |
W |
C |
Mn |
Si |
|
min |
balance |
21.0 |
19.0 |
16.0 |
2.5 |
2.0 |
0.05 |
0.50 |
0.20 |
|
max |
23.0 |
22.5 |
21.0 |
4.0 |
3.5 |
0.15 |
2.00 |
0.80 |
|
|
% |
P |
S |
Al |
Ta |
Nb |
La |
Zr |
N |
B |
|
min |
|
|
0.10 |
0.30 |
|
0.005 |
0.001 |
0.10 |
|
|
max |
0.040 |
0.015 |
0.50 |
1.25 |
0.30 |
0.10 |
0.10 |
0.30 |
0.020 |
Physical properties
|
Density |
8.23 g/cm3 |
|
Melting range |
1330-1415¡æ |
Features: Haynes 556 combines effective resistance to sulfidizing, carburizing and chlorine-bearing environments at high temperatures with good oxidation resistance, fabricability and excellent high temperature strength. It also resists to corrosion by molten zinc, molten chloride salts and other salts.
Applications: Industrial waste incinerators, rotary calciners and kilns, hot-dip galvanizing equipment, aerospace industry high temperature components.
