Stainless Steel Plate

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304H Stainless Plate

Stainless Steel Plate

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  • 304H Stainless Plate
  • 304H Stainless Plate
  • 304H Stainless Plate
  • 304H Stainless Plate
  • 304H Stainless Plate
  • 304H Stainless Plate
  • 304H Stainless Plate
  • 304H Stainless Plate
  • 304H Stainless Plate
  • 304H Stainless Plate

304H Stainless Plate

Specification : ASTM A240 / ASME SA240

Dimension Standard : JIS, AISI, ASTM, GB, DIN, EN, etc

Width : 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc

Length : 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc

Thickness : 0.3 mm to 120 mm

Form : Coils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) etc.

Surface Finishing : Hot rolled plate (HR), Cold rolled sheet (CR),2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, Chequered, embossed, hair line, sand blast, Brush, etching, SATIN (Met with Plastic Coated) etc.

  • Description
  • Specification
  • Standard
  • Process
  • Packing

Alloy 304/304H (UNS S30400/ S30409) is a modification of the most widely utilized "18-8" chromium-nickel austenitic stainless steel. The carbon content is controlled in the range of 0.04-0.10% for increased strength at temperatures above 800°F (427°C). It is an economical and versatile corrosion resistant alloy suitable for a wide range of general purpose applications.

It is common practice for 304H to be dual certified as 304 and 304H. The high carbon chemistry of 304H enables 304 to meet the mechanical properties and grain size requirements of 304H.

Alloy 304/304H has general corrosion resistance similar to 304/304L. It resists atmospheric corrosion, as well as, moderately oxidizing and reducing environments. However, because of its high carbon content, Alloy 304/304H is subject to carbide precipitation in the heat affected zone of welds.

Alloy 304/304H is non-magnetic in the annealed condition, but can become slightly magnetic as a result of cold working or welding. It can be easily welded and processed by standard shop fabrication practices.


Corrosion Resistance of 304H Stainless Steel:

(1)Alloy 304/304H also resists moderately aggressive organic acids such as acetic. The nickel present in the alloy provides resistance to moderately reducing solutions such as pure phosphoric acid, whatever the concentration, in cold solutions and up to 10% diluted hot solutions. The alloy can also operate successfully in caustic solutions free of chlorides or fluorides at moderate temperatures.

(2)Alloy 304/304H does not perform well in more highly reducing environments such as those containing chlorides and sulfuric acid.

(3)Alloy 304/304H performs well in fresh water service with low levels of chlorides (less than 100ppm). At higher chloride levels the grade is susceptible to crevice corrosion and pitting. For successful performance under these more severe conditions, higher molybdenum content is need such as 316/316L. Alloy 304/304H is not recommended for service in marine environments.

(4)In most instances, the corrosion resistance of Alloys 304, 304L and 30H will be roughly equal in most corrosive environments. However, in environments that are sufficiently corrosive to cause intergranular corrosion of welds and heat-affected zones Alloy 304L should be used because of its low carbon content.

Stainless Steel Gauge Width and Length

Weight Lbs. per Sq. Ft.

Estimated Weight per Sheet

7 ga. (.1874") x 48 x 120

7.871

314.8

10 ga. (.135") x 48 x 120

5.670

226.8

11 ga. (.120") x 36 x 120

5.040

151.2

11 ga. (.120") x 48 x 96

5.040

161.3

11 ga. (.120") x 48 x 120

5.040

201.6

11 ga. (.120") x 48 x 144

5.040

241.9

11 ga. (.120") x 60 x 96

5.040

252.0

12 ga. (.105") x 36 x 120

4.410

132.3

12 ga. (.105") x 48 x 120

4.410

176.4

12 ga. (.105") x 60 x 120

4.410

220.5

14 ga. (.075") x 36 x 120

3.150

94.50

14 ga. (.075") x 48 x 120

3.150

126.0

16 ga. (.060") x 36 x 120

2.520

75.60

16 ga. (.060") x 48 x 96

2.520

80.64

16 ga. (.060") x 48 x 120

2.520

100.8

16 ga. (.060") x 60 x 120

2.520

126.0

18 ga. (.048") x 36 x 120

2.016

60.48

18 ga. (.048") x 48 x 120

2.016

80.64

20 ga. (.036") x 36 x 120

1.512

45.36

20 ga. (.036") x 48 x 120

1.512

60.48

22 ga. (.030") x 36 x 120

1.260

37.80

22 ga. (.030") x 48 x 96

1.260

40.32

22 ga. (.030") x 48 x 120

1.260

50.40

24 ga. (.024") x 36 x 120

1.008

30.24

24 ga. (.024") x 48 x 120

1.008

40.32

26 ga. (.018") x 36 x 120

.7560

22.68

26 ga. (.018") x 48 x 120

.7560

30.24

28 ga. (.015") x 36 x 120

.6300

18.90

Equivalent Grades of 304/304L/304H Stainless Steel Sheets

STANDARD

WERKSTOFF NR.

UNS

JIS

BS

GOST

AFNOR

EN

SS 304

1.4301

S30400

SUS 304

304S31

08Х18Н10

Z7CN18‐09

X5CrNi18-10

SS 304L

1.4306 / 1.4307

S30403

SUS 304L

3304S11

03Х18Н11

Z3CN18‐10

X2CrNi18-9 / X2CrNi19-11

SS 304H

1.4301

S30409

SS 304LN

1.4311

S30409

Chemical Composition

Grade

C

Mn

Si

P

S

Cr

Mo

Ni

N

SS 304

0.08 max

2 max

0.75 max

0.045 max

0.030 max

18 – 20

8 – 11

SS 304L

0.035 max

2 max

1.0 max

0.045 max

0.030 max

18 – 20

8 – 13

SS 304H

0.10 max

2 max

0.75 max

0.045 max

0.030 max

18 – 20

8 – 10.5

Physical Properties of 304H Stainless Plate

Density lb/inᶟ

0.285

Density g/cmᶟ

7.90

Melting Range

2550-2590°F/1398-1421°F

Thermal Conductivity at 212°F (100°C)

9.4 BTU/hr/ft²/ft/°F

Thermal Conductivity at 212°F (100°C)

16.3 W/m-°K

Electrical Resistivity

29.1 Microhm-in at 68°C

Electrical Resistivity

73.0 Microhm-cm at 20°C


Hot-Rolled Steel Sheets and Coils 


Cold-Rolled Steel Sheets and Coils


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