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Contact Person : Ms. zhang Sai
Company Name : Tianjin Dongmao Special Steel Metal Material Trade Co., Ltd.
Tel : 86-22-26614461
Fax : 86-22-26914461
Address : Tianjin,Tianjin,Room 401, Door 2, Building 1, Tianyang Apartment, Beichen District
Country/Region : China
Zip : 300400

ASTM A268 TP444 Stainless seamless Steel Pipes with different sizes

Product Detailed

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

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
Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	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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