TP304H Stainless Steel Pipe – ASME SA213 TP304H Seamless Tubes

   

304H

Guanyu Tube is a specialized manufacturer of ASTM A213 ASME SA213 TP304H Stainless Steel Tubes, ASTM A312 ASME SA 312 TP 304H Stainless Steel Pipe, EN 10216-5 1.4948 Stainless Steel Tubes in China. 304H stainless steel pipe is a variation of the 18% chromium – 8% nickel austenitic Alloy 304, in which the carbon content is controlled to a range of 0.04% – 0.10% (ASME SA213) to provide improved high temperature strength to parts exposed to temperatures above 1500°F (815°C).

ASME SA213 TP304H Stainless Steel Tubes Properties and Character

Unlike 304L, TP304H has a higher carbon content making the steel more suitable for use in applications where elevated temperatures are present. It is an austenitic chromium-nickel steel alloy and the greater carbon content delivers an increased tensile strength and yield strength. The material is recommended for use in ASME pressure vessel in working service above 815 °C due to the grade’s heat resistant properties. 304H Normally working temperature is 590 °C [1095°F]

The higher carbon content of 304H increases its strength, so the ASTM A213 tensile strength and yield strength of 304H is greater than 304L. 304H has greater short term and long term creep strength than 304L at temperature up to 500 °C, and 304H is more resistant to sensitization than 304L. 304H is required in such applications.

Alloy 304H is most commonly used in petroleum refineries. It is also in Stainless Steel Reheater Tubes and Superheater Tubes for Boiler, heat exchanger tubes, condensers tubes, pipelines, cooling towers, steam exhausts, and electric generation plants. It will also be found in fertilizer and chemical plants.

What does the H mean?

H-grades have 0.04 – 0.10% carbon content. H-grades are increased tensile strength and yield strength. H-grade often have slightly Higher (typically 30MPa less) minimum tensile strength and yield strength than standard stainless steel.

Benefits of using ASTM A312 TP304H Stainless Steel Pipes and Tubes

  • Higher carbon content gives the material greater heat resistant qualities
  • Higher tensile strength and yield strength
  • Greater short and long term creep strength

304H Stainless Steel Chemical Composition

Table 1. Composition ranges for ASME SA 213 304 304L 304H and EN 10216-5 1.4301 1.4307 1.4948

GradeCMnSiPSCrMoNiN
304/S30400min.max.-0.08-2.0-1.00-0.045-0.03018.0-20.08.0-11.0
EN 10216-5 1.4301min.max.-0.07-2.0-1.00-0.040-0.01517.00-19.58.0-10.5-0.11
304L/S30403min.max.-0.035-2.0-1.00-0.045-0.03018.0-20.08.0-12.0
EN 10216-5 1.4307min.max.-0.030-2.0-1.00-0.040-0.01517.5-19.58.0-10.0-0.11
304H /S30409min.max.0.04-0.10-2.0-1.00-0.045-0.03018.0-20.08.0-11.0
EN 10216-5 1.4948min.max.0.04-0.08-2.0-1.00-0.035-0.01517.0-19.08.0-11.0-0.

ASTM A213 TP304H Stainless Steel Tube Mechanical Properties

Typical mechanical properties for grade 304 stainless steels are given in table 2.

Table 2. 304H Stainless Steel Tubing Mechanical properties

Tensile StrengthYield StrengthElongationHardnessHardness
Grade(MPa) min0.2% Proof (MPa) min(% in 50mm) minRockwell B (HR B) maxBrinell (HB) max
3045152053590192
304L4851703590192
304H5152053590192

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

304H Stainless Steel Pipe Mechanical Properties (Tested By Guanyu Steel Tube According to ASME SA213 MW, OD 50.8mm, WT 2.11mm)

UNS NoGradeYield Strength
Rp0.2% (MPa)
Tensile Strength
(MPa)
Elongation
(%)
Hardness HB MaxHardness HRB Max
S30409TP304H273/285589/59754/55149/15383/84

TP304H Stainless Steel Physical Properties

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

DensityElastic ModulusMean Coefficient of Thermal Expansion (mm/m/°C)Mean Coefficient of Thermal Expansion (mm/m/°C)Mean Coefficient of Thermal Expansion (mm/m/°C)Thermal Conductivity (W/m.K)Thermal Conductivity (W/m.K)Specific Heat 0-100°CElectrical Resistivity
Grade(kg/dm³)(GPa)0-100°C0-315°C0-538°Cat 100°Cat 500°C(J/kg.K)(nW.m)
304/
304L/
304H
7.9319317.217.818.416.221.5500720
Weight calculation coefficient: 0.02491

304/304L/ TP304H Stainless Steel Standard Specification

Specification for 304/304L/304H grade stainless steel



BritishBritishENENSwedish SSJapanese JIS
GradeUNS NoBSEnNoNameSSJIS
304S30400304S3158EEN 10216 – 5 1.4301X5CrNi18-102332SUS 304
304LS30403304S11EN 10216 – 5 1.4307X2CrNi19-112352SUS 304L
304HS30409304S51EN 10216 – 5 1.4948X6CrNi18-11

These comparisons are approximate only.

TP304H Stainless Steel Pipe Standards – ASTM A213/A269/A312 TP304H

ASTM/ASME: UNS S30409
EURONORM: FeMi35Cr20Cu4Mo2
DIN: 1.4948

304H Stainless Steel Pipe is commonly found in the oil refining, gas and chemical industry and is used in industrial boilers, pressure vessels, heat exchanger, pipelines and condensers. The material is also used throughout the power generation industry.

304H Stainless Steel ASTM Standards

BarButt Weld FittingsForgingsPipe, Welded & SeamlessWelded PipeSeamless Steel TubePlate
A276, A479A403A182A312ASTM A249ASME SA213A240
Standard Specification:EN 10216-5DIN 17456, DIN 17458, DIN 2462, DIN 17455
GB/T14975, T14976, T13296, GB5310
ASTM A213A269A312A511A789A790A928, A999, A1016, ASTM B161, ASTM B163, ASTM B165, ASTM B167, ASTM B338, ASTM B407, ASTM B423, ASTM B444,ASTM B619, ASTM B622, ASTM B626, ASTM B668, ASTM B677, ASTM B829
JIS G3459, JIS G3463, JIS G3446, JIS G3447, JIS G3448, JIS G3468
GOST 9940,GOST 9941

ASME SA213 TP304H Stainless Steel Pipe Applications

Alloy 304H is often used as a material of construction up to about 1500oF. Some examples of applications that Alloy 304H is commonly used for includes:

Most commonly useed in petroleum refineries
Stainless Steel Reheater Tubes and Superheater Tubes for Boiler
Heat exchanger
Condensers
Pipelines
Cooling towers
Steam exhausts
Electric generation plants
On occasion will be found in fertilizer and chemical plants

ASTM A312 TP304H Stainless Steel Pipe Size and Weight

NPSDNOD
inch
OD
mm
SCH5S
mm
SCH10S
mm
SCH10
mm
SCH20
mm
SCH30
mm
STD
mm
SCH40S
mm
SCH40
mm
SCH60
mm
XS
mm
SCH80S
mm
SCH80
mm
SCH100
mm
SCH120
mm
SCH140
mm
SCH160
mm
XXS
mm
  1/8″60.405″10.3 1.241.24 1.451.731.731.73 2.412.412.41     
kgs/m    0.2800.280 0.3200.3690.3690.369 0.4740.4740.474     
  1/4″80.540″13.7 1.651.65 1.852.242.242.24 3.023.023.02     
kgs/m    0.4950.495 0.5460.6390.6390.639 0.8030.8030.803     
  3/8″100.675″17.1 1.651.65 1.852.312.312.31 3.203.203.20     
kgs/m    0.6350.635 0.7030.8510.8510.851 1.1081.1081.108     
  1/2″150.840″21.31.652.112.11 2.412.772.772.77 3.733.733.73   4.787.47
kgs/m   0.8081.0091.009 1.1341.2791.2791.279 1.6331.6331.633   1.9672.573
  3/4″201.050″26.71.652.112.11 2.412.872.872.87 3.913.913.91   5.567.82
kgs/m   1.0301.2921.292 1.4581.7041.7041.704 2.2202.2202.220   2.9283.678
1″251.315″33.41.652.772.77 2.903.383.383.38 4.554.554.55   6.359.09
kgs/m   1.3052.1132.113 2.2032.5282.5282.528 3.273.273.27   4.2795.505
1 1/432   1.660″42.21.652.772.77 2.973.563.563.56 4.854.854.85   6.359.70
kgs/m   1.6672.7212.721 2.9023.4273.4273.427 4.5124.5124.512   5.6717.853
1 1/2″40   1.900″48.31.652.772.77 3.183.683.683.68 5.085.085.08   7.1410.15
kgs/m   1.9173.1423.142 3.5744.0904.0904.090 5.4695.4695.469   7.3219.646
2″502.375″60.31.652.772.77 3.183.913.913.91 5.545.545.54   8.7411.07
kgs/m   2.4113.9703.970 4.5255.4925.4925.492 7.5577.5577.557   11.22513.575
2 1/2″65   2.875″732.113.053.05 4.785.165.165.16 7.017.017.01   9.5314.02
kgs/m   3.7265.3145.314 8.1238.7208.7208.720 11.52311.52311.523   15.06720.598
3″803.500″88.92.113.053.05 4.785.495.495.49 7.627.627.62   11.1315.24
kgs/m   4.5626.5226.522 10.01611.40711.40711.407 15.42815.42815.428   21.56227.963
3 1/290   4.000″101.62.113.053.05 4.785.745.745.74 8.088.088.08     
kgs/m   5.2297.4877.487 11.52813.70613.70613.706 18.82318.82318.823     
4″1004.500″114.32.113.053.05 4.786.026.026.02 8.568.568.56 11.13 13.4917.12
kgs/m   5.8978.4528.452 13.04116.23716.23716.237 22.54722.54722.547 28.604 33.87641.443
5″1255.563″141.32.773.403.40  6.556.556.55 9.539.539.53 12.70 15.8819.05
kgs/m   9.55911.67911.679  21.98621.98621.986 31.28131.28131.281 40.684 49.61258.012
6″1606.625″168.32.773.403.40  7.117.117.11 10.9710.9710.97 14.27 18.2621.95
kgs/m   11.42213.96613.966  28.54828.54828.548 42.99242.99242.992 54.752 68.24780.020
82008.625″219.12.773.763.766.357.048.188.188.1810.3112.7012.7012.7015.0918.2620.6223.0122.23
kgs/m   14.92720.16920.16933.65237.18842.97842.97842.97853.62265.29665.29665.29676.68691.353101.948112.395109.017
1025010.75″273.03.404.194.196.357.809.279.279.2712.7012.7012.7015.0918.2621.4425.4028.5825.40
kgs/m   22.83428.05628.05642.17851.52860.89960.89960.89982.34882.34882.34896.946115.870134.351156.660174.009156.660
12″30012.75″323.83.964.574.576.358.389.539.5310.3114.2712.7012.7017.4821.4425.4028.5833.3225.40
kgs/m   31.55036.34136.34150.21465.84374.60574.60580.511110.02798.41998.419133.380161.482188.802210.175241.099188.802
14″35014.00″355.63.964.786.357.929.539.539.5311.1315.0912.7012.7019.0523.8327.7931.7535.71 
kgs/m   34.68741.77255.24468.59382.15482.15482.15495.504127.995108.479108.479159.705196.940226.926256.131284.554 
16″40016.00″406.44.194.786.357.929.539.539.5312.7016.6612.7012.7021.4426.1930.9636.5340.49 
kgs/m   41.98047.82163.27978.61594.21494.21494.214124.550161.742124.550124.550205.596248.046289.544336.568369.059 
18″45018.00″457.24.194.786.357.9211.139.539.5314.2719.0512.7012.7023.8329.3634.9339.6745.24 
kgs/m   47.28253.87071.31588.637123.672106.273106.273157.446207.918140.621140.621257.251312.904367.420412.595464.249 
20″50020.00″5084.785.546.359.5312.709.539.5315.0920.6212.7012.7026.1932.5438.1044.4550.01 
kgs/m   59.91869.34079.350118.333156.692118.333118.333185.281250.340156.692156.692314.329385.394445.968513.266570.541 
22″55022.00″558.84.785.546.359.5312.709.53  22.2312.70 28.5834.9341.2847.6353.98 
kgs/m   65.96776.35187.386130.392172.763130.392  297.125172.763 377.478455.823532.158606.484678.802 
24″60024.00″609.65.546.356.359.5314.279.539.5317.4824.6112.7012.7030.9638.8946.0252.3759.54 
kgs/m   83.36195.42195.421142.452211.619142.452142.452257.825358.619188.833188.833446.255552.875646.065726.927815.817 
26″65026.00″660.4  7.9212.70 9.53   12.70       
kgs/m     128.726204.904 154.512   204.904       
28″70028.00″711.2  7.9212.7015.889.53   12.70       
kgs/m     138.748220.975275.048166.571   220.975       
30″75030.00″7626.357.927.9212.7015.889.53   12.70       
kgs/m   119.528148.770148.770237.046295.143178.631   237.046       
32″80032.00″812.8  7.9212.7015.889.53 17.48 12.70       
kgs/m     158.793253.117315.238190.690 346.304 253.117       
34″85034.00″863.6  7.9212.7015.889.53 17.48 12.70       
kgs/m     168.815269.188335.333202.750 368.423 269.188       
36″90036.00″914.4  7.9212.7015.889.53 19.05 12.70       
kgs/m     178.837285.259355.428214.809 424.875 285.259       
38″95038.00″965.2     9.53   12.70       
kgs/m        226.869   301.330       
40″100040.00″1016     9.53   12.70       
kgs/m        238.928   317.401       
42″105042.00″1066.8     9.53   12.70       
kgs/m        250.988   333.472       

TP304H Stainless Steel Tube Export Countries

MIDDLE EAST 
 Saudi Arabia
  Iran
  Iraq
  UAE
  Qatar
  Bahrain
  Oman
  Kuwait
  Turkey
  Yemen
  Syria
  Jordan
  Cyprus
AFRICA
  Nigeria
  Algeria
  Angola
  South Africa
  Libya
  Egypt
  Sudan
  Equatorial Guinea
  The Republic Of Congo
  Gabon

NORTH AMERICA
  USA
  Canada
  Mexico
  Panama
  Costa Rica
  Puerto Rica
  Trinidad And Tobago
  Jamaica
  Bahamas
  Denmark
EUROPE  
Russia
  Norway
  Germany
  France
  Italy
  UK
  Spain
  Ukraine
  Netherland
  Belgium
  Greece
  Czech Republic
  Portugal
  Hungary
  Albania
  Austria
  Switzerland
  Slovakia
  Finland
  Ireland
  Croatia
  Slovenia
  Malta
ASIA  
India
  Singapore
  Malaysia
  Indonesia
  Thailand
  Vietnam
  South Korea
  Japan
  Sri Lanka
  Maldives
  Bangladesh
  Mayanmar
  Taiwan
  Cambodia
SOUTH AMERICA 
 Argentina
  Bolivia
  Brazil
  Chile
  Venezuela
  Colombia
  Ecuador
  Guyana
  Paraguay
  Uruguay

TP304H Stainless Steel Pipe Marking and Packing

304H Stainless Steel Pipe
Stainlesss-Steel-Pipe-PMI-Testing

General Properties
Chemical Composition
Resistance to Corrosion
Heat Resistance
Physical Properties
Mechanical Properties
Welding
Heat Treatment
Cleaning
304/304L/304LN/304H Tubing and Pipe
Stainless Steel ” L” “H” Grade
Difference Between 304H and 347H
Difference Between 304 304L and 321
304 304L 304LN 304H Stainless Steel Tubing and Pipe

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