Jul 25 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Thermal Properties
Fabrication and Heat Treatment
Machinability
Forming
Welding
Heat Treatment
Forging
Hot Working
Cold Working
Other Designations
Applications
Introduction
Sanicro 41 is an austenitic, corrosion resistant Ni-Fe-Cr alloy that is characterized by very good resistance to corrosion in acidic media and stress corrosion cracking. The alloy has good weldability and much better resistance to pitting and crevice corrosion.
The following datasheet will provide an overview of Sanicro 41 alloy.
Chemical Composition
The chemical composition of Sanicro 41 alloy is outlined in the following table.
|
Element |
Content (%) |
|
Nickel, Ni |
38.5 |
|
Iron, Fe |
35.1 |
|
Chromium, Cr |
20 |
|
Molybdenum, Mo |
2.6 |
|
Copper, Cu |
1.7 |
|
Manganese, Mn |
0.8 |
|
Titanium, Ti |
0.7 |
|
Silicon, Si |
≤0.5 |
|
Carbon, C |
≤0.03 |
|
Phosphorous, P |
≤0.025 |
|
Sulfur, S |
≤0.015 |
Physical Properties
The following table shows the physical properties of Sanicro 41 alloy.
|
Properties |
Metric |
Imperial |
|
Density |
8.10 g/cm3 |
0.293 lb/in3 |
Mechanical Properties
The mechanical properties of Sanciro 41 alloy are displayed in the following table.
|
Properties |
Metric |
Imperial |
|
Tensile strength |
≥517 MPa |
≥75000 psi |
|
Yield strength |
≥172 MPa |
≥24900 psi |
|
Elongation at break |
≥30% |
≥30% |
Thermal Properties
The thermal properties of Sanicro 41 alloy are given in the following table.
|
Properties |
Metric |
Imperial |
|
Thermal expansion co-efficient (@30-100°C/86-212°F) |
14.2 µm/m°C |
7.89 µin/in°F |
|
Thermal conductivity (@20°C/68°F) |
11 W/mK |
76.3 BTU.in/hrft².°F |
Fabrication and Heat Treatment
Machinability
Conventional machining techniques that are used for machining iron-based alloys can be used.
Forming
Sanicro 41 alloy has excellent ductility, and can be readily formed by all conventional techniques.
Welding
The alloy can be welded using commonly used welding techniques such as gas-tungsten arc welding, shielded metal-arc welding, gas metal-arc welding and submerged-arc welding.
Heat Treatment
Sanicro 41 alloy can be heat treated at 954°C (1750°F) and then air cooled.
Forging
The alloy can be forged in the temperature range of 982 to 1093°C (1800 to 2000°F).
Hot Working
Hot working can be carried out at temperatures below 927°C (1700°F) to maintain optimum corrosion resistance of the alloy.
Cold Working
Cold working may be performed using standard tooling.
Other Designations
Other designations that are equivalent to Sanicro 41 alloy include the following:
|
ASTM B163 |
ASTM B564 |
|
ASTM B423 |
ASTM B704 |
|
ASTM B424 |
ASTM B705 |
|
ASTM B425 |
DIN 2.4858 |
Applications
The following are the list of applications of Sanicro 41 alloy:
-
Acid production piping and vessels
-
Pickling
-
Chemical process equipment.