Home>>Technical>>Steel Grades
Steel Grades
Grade |
Applications |
1. Austenitic steels |
TP 304 |
General purpose stainless steel with good corrosion resistance for most applications. Used for: Bar rails, Boat railings, Canopy supports, Chemical processing equipment, Chemical tubing, Column covers, Duct works, Feed-water tubes, Food preparation equipment, Food processing equipment, Heat exchanger tubes, Hypodermic needles, Ladders, Mechanical & structural components, Pharmaceutical processing equipment, Piping systems, Railings (architectural), Traffic barriers, Water pipes. |
TP304 LN,316LN |
Boiler, super-heater,heat exchanger tubes |
TP 304H |
Higher carbon content than 304L, for increased strength, particularly at elevated temperatures. |
TP 304L |
Chemical plant and food processing equipment, where freedom from sensitisation is required in plate thicknesses |
TP 316 / 316L |
Used where higher corrosion resistance is required. Boat railings, Canopy supports, Chemical tubing, Column covers, Duct works, Feed-water tubes, Food preparation equipment, Food processing equipment, Heat exchanger tubes, Hypodermic needles, Ladders, Mechanical & structural components, Pharmaceutical processing equipment, Piping systems, Railings, Street (urban) furniture, Textile tubing, Traffic barriers, Water pipes. |
TP 316H |
Similar oxidation resistance to TP 316. Main areas of application: Heat exchangers, furnaces, chemical and petrochemical plant. |
TP 321 |
Heat exchanger tubing, Chemical processing tubing, Pressure tank tubing. Suitable for heat resisting applications to 800℃. |
TP 321H |
This is the high carbon version of TP 321 which ensures greater creep resistance. Behaves much the same as TP 321 in oxidation resistance. Main applications: Heat exchangers, furnaces, boilers in chemical and petrochemical plant. |
TP 316Ti |
A titanium stabilised version of 316 used where good resistance to intergranular corrosion and high temperature strength is required. |
TP 317/317L |
Chemical processing tubing, Dyeing equipment, Ink manufacturing equipment, Pulp & paper manufacturing equipment |
2. Super-Austenitic Steels |
TP 904L |
High resistance to general corrosion in e.g. sulphuric and acetic acids, crevice corrosion, stress corrosion cracking, pitting in chloride bearing solutions. |
3. Ferritic and Martensitic steels |
TP 405 |
Used for applications where hardening upon cooling from high temperatures must be avoided. Has excellent long-time stability up to 1200°F. |
TP 410 |
General purpose grade for use in mildly corrosive environments |
TP 430 |
Mechanical & structural tubing, Architectural tubing, Heat exchanger tubing, Condensers, Re-heaters, Evaporators. |
4. Duplex |
S31803 |
Typically used in heat exchangers, gas scrubbers, fans, chemical tanks, flowlines, marine and refinery applications. |
5.Supper duplex |
S32750 |
Superduplex is an austenitic ferritic iron cromium-nickel alloy with Molybdenim addition. |
S32760 |
It has good resistance to pitting corrosion, and a high tensile strength. |
|