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ASTM A268 TP444 Stainless seamless Steel Pipes with different sizes

ASTM A268 TP444 Stainless seamless Steel Pipes with different sizes
Product Detailed
Related Categories:Stainless Steel Pipes
tp444 is the standard stainless seamless steel pipe; it is the most versatile and most widely used stainless steel,
Key Properties

These properties are specified for flat rolled product (plate, sheet and coil) in ASTM A240/A240M. Similar but not necessarily identical properties are specified for other products such as pipe and bar in their respective specifications.

Composition

Table 1. Composition ranges for 304 grade stainless steel

Grade

C

Mn

Si

P

S

Cr

Mo

Ni

N

 

 

-

0.08

-

2.0

-

0.75

-

0.045

-

0.030

18.0

20.0

-

8.0

10.5

-

0.10

 

 

-

0.030

-

2.0

-

0.75

-

0.045

-

0.030

18.0

20.0

-

8.0

12.0

-

0.10

 

 

0.04

0.10

-

2.0

-

0.75

-0.045

-

0.030

18.0

20.0

-

8.0

10.5

-

Mechanical Properties

Typical mechanical properties for grade 304 stainless steels are given in table 2.

Table 2. Mechanical properties of 304 grade stainless steel

Grade

Tensile Strength (MPa) min

Yield Strength 0.2% Proof (MPa) min

Elongation (% in 50mm) min

Hardness

Rockwell B (HR B) max

Brinell (HB) max

 

515

205

40

92

201

 

485

170

40

92

201

 

515

205

40

92

201

304H also has a requirement for a grain size of ASTM No 7 or coarser.

Physical Properties

Grade

Density (kg/m3)

Elastic Modulus (GPa)

Mean Coefficient of Thermal Expansion (mm/m/°C)

Thermal Conductivity (W/m.K)

Specific Heat 0-100°C (J/kg.K)

Electrical Resistivity (nW.m)

0-100°C

0-315°C

0-538°C

at 100°C

at 500°C

304/L/H

8000

193

17.2

17.8

18.4

16.2

21.5

500

720

ASTM A268 TP444 Stainless seamless Steel Pipes with different sizes



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