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What is ASTM A213 TP444?
ASTM A213 pipe is a seamless tube of ferritic steel and austenitic alloy SS (stainless steel) for use in superheaters and heat exchangers in boilers. ASTM A213 is available in several grades.
Features of Stainless Steel
Stainless steel is an iron alloy containing chromium and other
alloy metals such as nickel, molybdenum, titanium, copper, carbon
and nitrogen. Stainless steel tubes are used in aircraft hydraulic
lifts, factories, mills, production lines, fuel and thermal
industries, military, nuclear development, etc. Stainless steel
pipes and tubes available for fabrication are available in various
grades such as 304, 316L, 309S, 310S, 317L, 321, 321H, 347H, 316Ti.
Seamless stainless steel pipes are formed by using a hydrothermal
extrusion machine that uses hot extruded hollow or pipes as raw
material. They are used in various fields such as heat exchangers,
nuclear power plants, oil and gas, petrochemicals and refineries,
chemicals and fertilizers, etc.
Advantage of ASTM A213 TP444 U bend tube
The advantage of the U-bend is the distribution of pressure and momentum along the bending surface of the bend, thus gradually performing stabilization.
Mechanical Properties of ASTM A213 TP444
| Tensile strength σb Mpa | Yield point σs Mpa | Elongation after break or elongation δ % | Hardness HBW |
|---|---|---|---|
| ≥415 | ≥275 | ≥20 | ≤217 |
Chemical Composition of ASTM A213 TP444
| element | C | Si | Mn | P | S | Cr | Mo | N | more |
|---|---|---|---|---|---|---|---|---|---|
| Minimum | - | - | - | - | - | 17.5 | 1.75 | - | Ni+Cu≤1.00；Ti+Nb:0.20+4(C+N) ~ 0.80 |
| Maximum | 0.03 | 1 | 1 | 0.04 | 0.03 | 19.5 | 2.5 | 0.035 |
Equivalent of ASTM A213 TP444
| CHINA | JAPANESE | AMERICA | International Standards Organization | France | European Standard | Sweden | |||
| ISC | JIS | ASTM | UNS | ISO | Number plate number | NF EN/NF | EN | Number plate number | SS |
| S11972 | SUS 444 | 444 | S44400 | X2CrMoTi18-2 | 4521-444-00-I | Z3CDT18-02 | X2CrMoTi18-2 | 1.4521 | 2326 |
Application
Oil
Gas
Chemical
heat exchanger
condenser
