Hastelloy B-3 is a nickel-molybdenum alloy with excellent resistance to pitting, corrosion, and stress-corrosion cracking plus, thermal stability superior to that of alloy B-2. In addition, this nickel steel alloy has great resistance to knife-line and heat–affected zone attack. Alloy B-3 also withstands sulfuric, acetic, formic and phosphoric acids, and other non-oxidizing media. Furthermore, this nickel alloy has excellent resistance to hydrochloric acid at all concentrations and temperatures. Hastelloy B-3’s distinguishing feature is its ability to maintain excellent ductility during transient exposures to intermediate temperatures. Such exposures are routinely experienced during heat treatments associated with fabrication.
Alloy B-3 has poor corrosion resistance to oxidizing environments, therefore, it is not recommended for use in oxidizing media or in the presence of ferric or cupric salts because they may cause rapid premature corrosion failure. These salts may develop when hydrochloric acid comes in contact with iron and copper. Therefore, if this nickel steel alloy is used in conjunction with iron or copper piping in a system containing hydrochloric acid, the presence of these salts could cause the alloy to fail prematurely.
| Alloy |
% |
Ni |
Cr |
Mo |
Fe |
Nb |
Co |
C |
Mn |
Si |
S |
Cu |
Al |
Ti |
P |
V |
W |
Ta |
Ni+Mo |
|
Hastelloy B-3 |
Min. |
65.0 |
1.0 |
27.0 |
1.0 |
- |
- | - | - | - | - | - |
- |
- |
- |
- | - | - | 94.0 |
|
Max. |
- |
3.0 |
32.0 |
3.0 |
0.2 |
3.0 |
0.01 |
3.0 |
0.1 |
0.01 |
0.2 |
0.5 |
0.2 |
0.03 |
0.2 |
3.0 |
0.2 |
98.0 |
| Density | 9.24 g/cm³ |
| Melting point | 1370-1418 ℃ |
| Status |
Tensile strength Rm N/mm² |
Yield strength Rp 0. 2N/mm² |
Elongation As % |
Brinell hardness HB |
| Solution treatment | 760 | 350 | 40 | - |
| Bar/Rod | Strip/Coil | Sheet/Plate | Pipe/Tube | Forging |
| ASTM B335,ASME SB335 | ASTM B333,ASME SB333 | ASTM B662,ASME SB662 ASTM B619,ASME SB619 ASTM B626 ,ASME SB626 |
ASTM B335,ASME SB335 | |
Round bars/Flat bars/Hex bars, Size From 8.0mm-320mm, Used for bolts,fastners and other spare parts
Standards size and customized dimension can be produced by us with small tolerance
Widths up to 1500mm and lengths up to 6000mm,Thickness from 0.1mm to 100mm.
Hastelloy B-3 materials in forms of Bolts,screws,flanges and other fasterners, according to clients specification.
Soft condition and hard condition with AB bright surface, width up to 1000mm
• Maintains excellent ductility during transient exposures to intermediate temperatures
• Excellent resistance to pitting, corrosion and stress-corrosion cracking
• Excellent resistance to knife-line and heat-affected zone attack
• Excellent resistance to acetic, formic and phosphoric acids and other non-oxidizing media
• Resistance to hydrochloric acid at all concentrations and temperatures
• Thermal stability superior to alloy B-2
Hastelloy B-3 alloy is suitable for use in all applications previously requiring the use of Hastelloy B-2 alloy. Like B-2 alloy, B-3 is not recommended for use in the presence of ferric or cupric salts as these salts may cause rapid corrosion failure. Ferric or cupric salts may develop when hydrochloric acid comes in contact with iron or copper.
• Chemical processes
• Vacuum furnaces
• Mechanical components in reducing environments