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Stainless Steel 321/321H Heat Exchanger Tubes

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Stainless Steel 321/321H Heat Exchanger Tubes

Stainless Steel 321/321H Heat Exchanger Tubes Specification

Specifications ASTM, ASME, DIN EN, JIS ( JAPAN ), NF ( AFNOR )
Range 6.35 Mm OD to 273 Mm OD
Outer Diameter 9.52 mm O.D to 50.80 mm O.D
Thickness 0.7 mm to 3.68 mm
Schedules 5, 10S, 10, 30, 40S, 40, 80, 80S, XS, 160, XXH
Type Seamless Tubes, Welded Tubes
Length Up to 30mtr long
Finishing It can be supplied in mechanical polished with various grits like at 80, 120, 240, 320, 400, 600 grits and mirror polished.

Stainless Steel Fin Tube Heat Exchanger Dimension Chart

Wall thickness in mm. 0.5 0.6 0.7 0.8 1 1.2 1.6 2 2.6 3 3.2 3.6
O.D. in mm. Weight in kg/meter
6 0.069 0.081 0.093 0.104 0.125 0.144 0.176 – – – – –
9.52 0.112 0.134 0.154 0.174 0.213 0.249 0.317 – – – – –
10 0.119 0.141 0.163 0.184 0.225 0.264 0.336 – – – – –
12.7 0.153 0.182 0.21 0.238 0.293 0.345 0.444 – – – – –
14 0.169 0.201 0.233 0.264 0.325 0.384 0.496 – – – – –
15.87 0.192 0.229 0.266 0.301 0.372 0.44 0.571 0.694 – – – –
19 0.231 0.276 0.32 0.364 0.45 0.534 0.696 0.85 1.066 1.2 1.264 –
25 0.306 0.366 0.425 0.484 0.6 0.714 0.936 1.15 1.456 1.65 1.744 1.926
25.4 0.311 0.372 0.432 0.492 0.61 0.726 0.952 1.17 1.482 1.68 1.776 1.962
31.8 – – – – – 0.918 1.208 1.49 1.898 2.16 2.288 2.538
38 – – – – – 1.104 1.456 1.8 2.301 2.625 2.784 3.096
44.5 – – – – – 1.299 1.716 2.125 2.724 3.113 3.304 3.681
50.8 – – – – – 1.488 1.968 2.44 3.133 3.585 3.808 4.248
63.5 – – – – – – 2.476 3.075 3.959 4.538 4.824 5.391
76.1 – – – – – – 2.98 3.705 4.778 5.483 5.832 6.525
101.6 – – – – – – 4 4.98 6 7 7,872 8.82

Stainless Steel 321/321H Heat Exchanger Tubes Equivalent Grades

STANDARD UNS WNR. EN JIS
SS 321 S32100 1.4541 X6CrNiTi18-10 SUS 321
SS 321H S32109 1.4878 X12CrNiTi18-9 SUS 321H

Chemical Composition of Stainless Steel 321/321H Heat Exchanger Tubes

% Cr Ni C Si Mn P S N Ti Fe
321 min:17.0
max:19.0		 min: 9.0
max:12.0		 max:0.08 max:0.75 max:2.0 max:0.045 max:0.03 max:0.10 min:5*(C+N)
max:0.70		 Balance
321H min:17.0
max:19.0		 min: 9.0
max:12.0		 min:0.04
max:0.10		 min:18.0
max:20.0		 max:2.0 max:0.045 max:0.03 max:0.10 min:5*(C+N)
max:0.70		 Balance

Mechanical Properties Of Stainless Steel 321/321H Heat Exchanger Tubes

Grade Tensile Strength
ksi (min.)		 Yield Strength 0.2%
Offset ksi (min.)		 Elongation -
% in
50 mm (min.)		 Hardness
(Brinell) MAX
321/321H 75 30 40 217

Physical Properties of Stainless Steel 321/321H Heat Exchanger Tubes

Denstiy
lbm/in3		 Coefficient of
Thermal Expansion (min/in)-°F		 Thermal Conductivity BTU/hr-ft-°F Specific Heat BTU/lbm -°F Modules of Elasticity (annealed)2-psi
at 68 °F at 68 – 212°F at 68 – 1832°F at 200°F at 32 – 212°F in tension (E)
0.286 9.2 20.5 9.3 0.12 28 x 106

Types Of Stainless Steel 321/321H Heat Exchanger Tubes

Stainless Steel 321 Heat Exchanger Tubes Stainless Steel 321H Seamless Heat Exchanger Tubes
SS 321H Heat Exchanger Tubes SS 321 Seamless Heat Exchanger Tubes
321 Heat Exchanger Tubes ASME SS 321 Heat Exchanger Tubes
Steel 321H Heat Exchanger Tubes DIN Stainless Steel 321H Heat Exchanger Tubes
ASTM A 213 Stainless Steel 321 Heat Exchanger Tubes ASTM A 269 SS 321H Seamless Heat Exchanger Tubes

Stainless Steel 321/321H Heat Exchanger Tubes Application Industries

  • Petrochemical Industry
  • Oil and Gas Industry
  • Chemical Industry
  • Power Plant Industry
  • Energy Industry
  • Pharmaceuticals Industry
  • Pulp & Paper Indusry
  • Food Processing Industry
  • Aerospace Industry
  • Refining Industry

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