304 Stainless Steel Plate

 

304 is a variation of the basic 18-8 grade, Type 302, with a higher chromium and lower carbon content. Lower carbon minimizes chromium carbide precipitation due to welding and its susceptibility to intergranular corrosion. In many instances, it can be used in the ”as-welded“ condition, while Type 302 must be annealed in order to retain adequate corrosion resistance. Type 304L is an extra low-carbon variation of Type 304 with a 0.03% maximum carbon content that eliminates carbide precipitation due to welding. As a result, this alloy can be used in the ”as-welded“ condition, even in severe corrosive conditions. It often eliminates the necessity of annealing weldments except for applications specifying stress relief. It has slightly lower mechanical properties than Type 304. Typical uses include architectural moldings and trim, kitchen equipment, welded components of chemical, textile, paper, pharmaceutical and chemical industry processing equipment.

 

PHYSICAL PROPERTIES Density, 0.29 lbs/in3 8.03 g/cm3 Electrical Resistivity, microhm-in (microhm-cm) 68°F (20°C) – 28.4 (72) 1200°F (659°C) – 45.8 (116) Specific Heat, BTU/lb/°F (kJ/kg•K) 32 - 212°F (0 - 100°C) – 0.12 (0.50) Thermal Conductivity, BTU/hr/ft2/ft/°F (W/m•K) at 212°F (100°C) – 9.4 (16.2) at 932°F (500°C) – 12.4 (21.4) Mean Coefficient of Thermal Expansion, in/in/°F (μm/m•K) 32- 212°F (0 - 100°C) – 9.4 x 10-6 (16.9) 32- 600°F (0 - 315°C) – 9.6 x 10-6 (17.3) 32-1000°F(0- 538°C)–10.2x10-6(18.4) 32-1200°F(0- 649°C)–10.4x10-6(18.7) FORMABILITY Types 304 and 304L have very good drawability. Their combination of low yield strength and high elongation permits successful forming of complex shapes. However, these grades work harden rapidly. To relieve stresses pro- duced in severe forming or spinning, parts should be full annealed or stress- relief annealed as soon as possible after forming. WELDABILITY The austenitic class of stainless steels is generally considered to be weldable by the common fusion and resistance Magnetic Permeability, H = 200 Oersteds, Annealed - 1.02 max. Modulus of Elasticity, ksi (MPa) 28.0 x 103 (193 x 103) in tension 11.2 x 103 ( 78 x 103) in torsion Melting Range, °F (°C) – 2550 - 2650 (1399 - 1454)

 

Density, 0.29 lbs/in3 8.03 g/cm3 Electrical Resistivity,

 

Electrical Resistivity, microhm-in (microhm-cm) 68°F (20°C) – 28.4 (72) 1200°F (659°C) – 45.8 (116) Specific Heat, BTU/lb/°F (kJ/kg•K) 32 - 212°F (0 - 100°C) – 0.12 (0.50) Thermal Conductivity, BTU/hr/ft2/ft/°F (W/m•K) at 212°F (100°C) – 9.4 (16.2) at 932°F (500°C) – 12.4 (21.4) Mean Coefficient of Thermal Expansion, in/in/°F (μm/m•K) 32- 212°F (0 - 100°C) – 9.4 x 10-6 (16.9) 32- 600°F (0 - 315°C) – 9.6 x 10-6 (17.3) 32-1000°F(0- 538°C)–10.2x10-6(18.4) 32-1200°F(0- 649°C)–10.4x10-6(18.7) FORMABILITY Types 304 and 304L have very good drawability. Their combination of low yield strength and high elongation permits successful forming of complex shapes. However, these grades work harden rapidly. To relieve stresses pro- duced in severe forming or spinning, parts should be full annealed or stress- relief annealed as soon as possible after forming. WELDABILITY The austenitic class of stainless steels is generally considered to be weldable by the common fusion and resistance Magnetic Permeability, H = 200 Oersteds, Annealed - 1.02 max. Modulus of Elasticity, ksi (MPa) 28.0 x 103 (193 x 103) in tension 11.2 x 103 ( 78 x 103) in torsion Melting Range, °F (°C) – 2550 - 2650 (1399 - 1454)

 

microhm-in (microhm-cm) 68°F (20°C) – 28.4 (72) 1200°F (659°C) – 45.8 (116) Specific Heat, BTU/lb/°F (kJ/kg•K) 32 - 212°F (0 - 100°C) – 0.12 (0.50) Thermal Conductivity, BTU/hr/ft2/ft/°F (W/m•K) at 212°F (100°C) – 9.4 (16.2) at 932°F (500°C) – 12.4 (21.4) Mean Coefficient of Thermal Expansion, in/in/°F (μm/m•K) 32- 212°F (0 - 100°C) – 9.4 x 10-6 (16.9) 32- 600°F (0 - 315°C) – 9.6 x 10-6 (17.3) 32-1000°F(0- 538°C)–10.2x10-6(18.4) 32-1200°F(0- 649°C)–10.4x10-6(18.7) FORMABILITY Types 304 and 304L have very good drawability. Their combination of low yield strength and high elongation permits successful forming of complex shapes. However, these grades work harden rapidly. To relieve stresses pro- duced in severe forming or spinning, parts should be full annealed or stress- relief annealed as soon as possible after forming. WELDABILITY The austenitic class of stainless steels is generally considered to be weldable by the common fusion and resistance Magnetic Permeability, H = 200 Oersteds, Annealed - 1.02 max. Modulus of Elasticity, ksi (MPa) 28.0 x 103 (193 x 103) in tension 11.2 x 103 ( 78 x 103) in torsion Melting Range, °F (°C) – 2550 - 2650 (1399 - 1454)

 

Specific Heat, BTU/lb/°F (kJ/kg•K) 32 - 212°F (0 - 100°C) – 0.12 (0.50) Thermal Conductivity, BTU/hr/ft2/ft/°F (W/m•K) at 212°F (100°C) – 9.4 (16.2) at 932°F (500°C) – 12.4 (21.4) Mean Coefficient of Thermal Expansion, in/in/°F (μm/m•K) 32- 212°F (0 - 100°C) – 9.4 x 10-6 (16.9) 32- 600°F (0 - 315°C) – 9.6 x 10-6 (17.3) 32-1000°F(0- 538°C)–10.2x10-6(18.4) 32-1200°F(0- 649°C)–10.4x10-6(18.7) FORMABILITY Types 304 and 304L have very good drawability. Their combination of low yield strength and high elongation permits successful forming of complex shapes. However, these grades work harden rapidly. To relieve stresses pro- duced in severe forming or spinning, parts should be full annealed or stress- relief annealed as soon as possible after forming. WELDABILITY The austenitic class of stainless steels is generally considered to be weldable by the common fusion and resistance Magnetic Permeability, H = 200 Oersteds, Annealed - 1.02 max. Modulus of Elasticity, ksi (MPa) 28.0 x 103 (193 x 103) in tension 11.2 x 103 ( 78 x 103) in torsion Melting Range, °F (°C) – 2550 - 2650 (1399 - 1454)

 

Thermal Conductivity, BTU/hr/ft2/ft/°F (W/m•K) at 212°F (100°C) – 9.4 (16.2) at 932°F (500°C) – 12.4 (21.4) Mean Coefficient of Thermal Expansion, in/in/°F (μm/m•K) 32- 212°F (0 - 100°C) – 9.4 x 10-6 (16.9) 32- 600°F (0 - 315°C) – 9.6 x 10-6 (17.3) 32-1000°F(0- 538°C)–10.2x10-6(18.4) 32-1200°F(0- 649°C)–10.4x10-6(18.7) FORMABILITY Types 304 and 304L have very good drawability. Their combination of low yield strength and high elongation permits successful forming of complex shapes. However, these grades work harden rapidly. To relieve stresses produced in severe forming or spinning, parts should be full annealed or stress- relief annealed as soon as possible after forming. WELDABILITY The austenitic class of stainless steel is generally considered to be weldable by the common fusion and resistance Magnetic Permeability, H = 200 Oersteds, Annealed - 1.02 max. Modulus of Elasticity, ksi (MPa) 28.0 x 103 (193 x 103) in tension 11.2 x 103 ( 78 x 103) in torsion Melting Range, °F (°C) – 2550 - 2650 (1399 - 1454)


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