Sign In | Join Free | My vivirlatino.com
vivirlatino.com
Tianjin Dongmao Special Steel Metal Material Trade Co.,Ltd.
Home > steel pipe >

ASTM A268 TP304L Stainless seamless Steel Pipes

ASTM A268 TP304L Stainless seamless Steel Pipes

Place of Origin : tianjin
Brand Name : DM
Model Number : DM--001
Certification : BV
Price : US $ 3.8 - 5 / Kilogram
Packaging Details : standard packing or woodbox or container packing
Delivery Time : make the shipment once getting the depossit
Payment Terms : L/C,T/T
Supply Ability : 2000 Ton/Tons per Month
MOQ : 1 Ton/Tons
Contact Now

Quick Details

  • Standard:ASTM
  • Place of Origin:Tianjin, China (Mainland)
  • Brand Name:Baosteel
  • Model Number:304
  • Type:Seamless
  • Steel Grade:400 Series
  • Certification:BV
  • Thickness:1.5-45mm
  • Outer Diameter:6-426mm

Packaging & Delivery

Packaging Details:standard packing or woodbox or container packing
Delivery Detail:make the shipment once getting the depossit

Specifications

Grade 304 is the standard "18/8" stainless; it is the most versatile and most widely used stainless steel, available in a wider,

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

Typical compositional ranges for grade 304 stainless steels are given in table 1.

Table 1.Composition ranges for 304 grade stainless steel

Grade

C

Mn

Si

P

S

Cr

Mo

Ni

N

304

min.

Max.

-

0.08

-

2.0

-

0.75

-

0.045

-

0.030

18.0

20.0

-

8.0

10.5

-

0.10

304L

min.

Max.

-

0.030

-

2.0

-

0.75

-

0.045

-

0.030

18.0

20.0

-

8.0

12.0

-

0.10

304H

min.

Max.

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

304

515

205

40

92

201

304L

485

170

40

92

201

304H

515

205

40

92

201

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

Physical Properties

Typical physical properties for annealed grade 304 stainless steels are given in table 3.

Table 3.Physical properties of 304 grade stainless steel in the annealed condition

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


Excellent in a wide range of atmospheric environments and many corrosive media. Subject to pitting and crevice corrosion in warm chloride environments, and to stress corrosion cracking above about 60°C. Considered resistant to potable water with up to about 200mg/L chlorides at ambient temperatures, reducing to about 150mg/L at 60°C.

Heat Resistance

Good oxidation resistance in intermittent service to 870°C and in continuous service to 925°C. Continuous use of 304 in the 425-860°C range is not recommended if subsequent aqueous corrosion resistance is important. Grade 304L is more resistant to carbide precipitation and can be heated into the above temperature range.

Grade 304H has higher strength at elevated temperatures so is often used for structural and pressure-containing applications at temperatures above about 500°C and up to about 800°C. 304H will become sensitised in the temperature range of 425-860°C; this is not a problem for high temperature applications, but will result in reduced aqueous corrosion resistance.

Heat Treatment

Solution Treatment (Annealing) - Heat to 1010-1120°C and cool rapidly. These grades cannot be hardened by thermal treatment.

Dual Certification

It is common for 304 and 304L to be stocked in "Dual Certified" form, particularly in plate and pipe. These items have chemical and mechanical properties complying with both 304 and 304L specifications. Such dual certified product does not meet 304H specifications and may be unacceptable for high temperature applications.



Product Tags:

stainless steel pipe

      

steel pipe

      

stainless pipe

      
China Customized Inflatable Bumper Ball Game Bubble Adult Grass CE supplier

ASTM A268 TP304L Stainless seamless Steel Pipes Images

Inquiry Cart 0
Send your message to this supplier
 
From:
Enter your email please.
To: Tianjin Dongmao Special Steel Metal Material Trade Co.,Ltd.
Subject:
Message:
Characters Remaining: (0/3000)
 
Inquiry Cart 0