Alloy C-4 Applications
Typical applications for Alloy C-4 are:
Alloy C-4 is used in a field of chemical process technology, including at higher temperatures.
Special applications are:
- Pickling bath regeneration in production companies.
- Components in acetic acid production and for the production of chemical fertilizers and pesticides.
Alloy C-4 is an austenitic nickel-molybdenum-chromium alloy with a low carbon, silicon, and iron content.
This alloy has a significantly lower tendency to form precipitation in the temperature range between 650 and 1,040 °C
(1,202 – 1,904 °F), improving its resistance to inter-crystalline corrosion. When machined perfectly, no knife line attack
occurs in the heat-affected zones of a welding edge.
Alloy C-4 is characterized by:
- Very good resistance in a broad field of corrosive media, in particular under strongly oxidizing conditions.
- Excellent resistance to pitting, crevice and stress corrosion.
- Approval for pressure vessels in the temperature range from -196 to 400 °C (-320 to 752 °F) in acc. w. VdTÜV
Materials Sheet 424.
Alloy C-4 Plate Standards
|Sheet, Plate||B 575||SB 575||17744
Alloy C-4 Designations
Alloy C-4 Chemical Composition
Alloy C-4 Physical Properties
|8.6 g/cm3 at 20 ℃ (537 lb/ft3) at 68 ℉||1,290 - 1,350 ℃(2,354 - 2,462 ℉)|
|Modulus Of Elasticity||-/-||202/29.3||188/27.3||168/24.4||158/22.9|
|Co-efficient of Thermal Expansion||-/-||11.9/6.61||12.9/7.17||14.0/7.78||14.5/8.06|
Alloy C-4 Mechanical Properties
Welding Alloy C-4
When welding nickel alloys and special stainless steels, the following information should be taken into account:
The generally applicable safety recommendations, especially for avoiding dust and smoke exposure must be observed.
A workplace arranged separately must be provided that is specifically cordoned off from areas where C steel is being
processed. Maximum cleanliness is required, and drafts should be avoided during gas-shielded welding.
|The use of the following fillers is recommended for gas-shielded welding methods:||TIG/MIG|