Call
+91 98590 17777
What is SB 444 Tube?
SB44 material can be heat treated to enhance the mechanical and corrosion resistance properties. The
ASME
SB 444 Tube is primarily found in heat exchangers and superheaters. They are manufactured according to
the
SB444 UNS N06625 specification. The tubes have elements like nickel, molybdenum, chromium and columbium
in
their chemical composition.
The ASTM B444 Pipe material is commercially popular as the proprietary brand Inconel 625. They have high
tensile strength and yield strength, and they are used for services at a high temperature conditions.
The
material can resist corrosion including pitting, crevice, stress, fatigue and erosion in different
organic
and mineral acids.
ASTM B444 gr1 vs ASTM B444 grade 2
The ASTM B444 grade is available in two grades, with different heat treated conditions. The ASTM B444 gr1
Tube is annealed, and they are normally employed in service temperatures up to 593°C.
The grade 2 Pipe is solution annealed wherein they are employed above the service temperature of 593
degrees C. The ASTM B444 grade 2 tubes are used in services where resistance to creep and rupture is a
primary requirement. Unless specified, generally grade 1 is supplied by the manufacturers.
Table of Contents
Specifications of ASME SB 444 Tube
ASME SB 444 tube size
ASTM B444 seamless pipe outside diameter
ASTM B443 UNS N06219 material standard
Thickness of ASTM B444 gr1 tube
SB 444 UNS N06219 material temperature
ASTM B444 piping grades
ASME SB 444 tubing test
ASME SB 444 UNS N06852 material end
ASTM B444 UNS N06219 tube forms
ASTM B444 grade 2 piping types
ASTM B444 seamless tube finish
ASTM B444 N06625 pipe Swg & Bwg
ASTM B444 Pipe Types
ASTM B444 gr1 polished tube
ASTM B444 grade 2 seamless pipe
ASTM B444 UNS N06625 seamless tube
SB 444 UNS N06219 material
ASME SB 444 UNS N06852 round tubing
ASTM B444 bright anneled tubing
UNS N06219 Nickel Alloy Tubing Length
| Tube Size , inches (milimeter) | Length , ft (meter) | PermissibleVariation, inches (mm) | |
|---|---|---|---|
| Over | Under | ||
| up to 1.250(31.8), incl | Under 1 (0.30) | 1/32 (0.8) | 0 (0) |
| up to 1.250(31.8), incl | 1 (0.30) to 4 (1.22), incl | 1/16 (1.6) | 0 (0) |
| up to 1.250(31.8), incl | Over 4 (1.22) to 10 (3.0), incl | 3/32 (2.4) | 0 (0) |
| up to 1.250(31.8), incl | Over 10 (3.0) | 3/16 (4.8) | 0 (0) |
Weight Chart of ASTM B444 Seamless Pipe
| Nominal Pipe Sizes | (WT) Wall Thickness | (Outer Dia) Outside Diameter | Weight | |
|---|---|---|---|---|
| Inch | Inch | Schedule | LBS / Feet | |
| 1/2 | 0.109 | 0.840 | 40 STD | 0.851 |
| 0.147 | 80 STD | 1.088 | ||
| 3/4 | 0.113 | 1.050 | 40 STD | 1.131 |
| 0.154 | 80 STD | 1.474 | ||
| 1 | 0.133 | 1.315 | 40 STD | 1.679 |
| 0.179 | 80 STD | 2.172 | ||
| 1 1/4 | 0.140 | 1.660 | 40 STD | 2.273 |
| 0.191 | 80 STD | 2.997 | ||
| 1 1/2 | 0.145 | 1.900 | 40 STD | 2.718 |
| 0.200 | 80 STD | 3.361 | ||
| 2 | 0.154 | 2.375 | 40 STD | 3.653 |
| 0.218 | 80 STD | 5.022 | ||
| 2 1/2 | 0.203 | 2.875 | 40 STD | 5.793 |
| 0.276 | 80 STD | 7.661 | ||
| 3 | 0.216 | 3.500 | 40 STD | 7.576 |
| 0.300 | 80 STD | 10.253 | ||
| 4 | 0.237 | 4.500 | 10.790 | |
| 0.337 | 14.983 | |||
| 6 | 0.188 | 6.625 | 12.924 | |
| 0.203 | 13.923 | |||
| 0.219 | 14.983 | |||
| 0.250 | 17.021 | |||
| 0.280 | 40 STD | 18.974 | ||
| 0.312 | 21.036 | |||
| 0.375 | 25.031 | |||
| 0.432 | 80 XHY | 28.573 | ||
| 0.500 | 32.708 | |||
| 8 | 0.188 | 8.625 | 16.940 | |
| 0.203 | 18.259 | |||
| 0.219 | 19.661 | |||
| 0.250 | 20 | 22.361 | ||
| 0.277 | 30 | 24.696 | ||
| 0.322 | 40 | 28.554 | ||
| 0.375 | 33.041 | |||
| 0.406 | 60 | 35.638 | ||
| 0.500 | 80 XHY | 43.388 | ||
| 10 | 0.188 | 10.750 | 21.207 | |
| 0.219 | 24.631 | |||
| 0.250 | 20 | 28.035 | ||
| 0.307 | 30 | 34.240 | ||
| 0.344 | 38.231 | |||
| 0.365 | 40 STD | 40.483 | ||
| 0.438 | 48.238 | |||
| 0.500 | 60 XHY | 54.735 | ||
| 0.594 | 80 | 64.429 | ||
| 14 | 0.188 | 14.000 | 27.732 | |
| 0.219 | 32.233 | |||
| 0.250 | 20 | 36.713 | ||
| 0.281 | 41.172 | |||
| 0.312 | 45.611 | |||
| 0.375 | STD | 54.568 | ||
| 0.438 | 40 | 63.441 | ||
| 0.500 | XHY | 72.090 | ||
| 0.625 | 89.278 | |||
| 16” | 0.188 | 16.000 | 21.748 | |
| 0.219 | 36.910 | |||
| 0.250 | 10 | 42.053 | ||
| 0.281 | 47.174 | |||
| 0.312 | 20 | 52.275 | ||
| 0.344 | 57.519 | |||
| 0.375 | 30 STD | 62.578 | ||
| 0.438 | 72.797 | |||
| 0.500 | 40 XHY/td> | 82.770 | ||
| 12 | 0.188 | 12.750 | 25.222 | |
| 0.219 | 29.309 | |||
| 0.250 | 33.375 | |||
| 0.281 | 37.420 | |||
| 0.312 | 41.445 | |||
| 0.375 | 49.562 | |||
| 0.406 | 53.525 | |||
| 0.500 | 65.415 | |||
| 0.562 | 73.154 | |||
| 18 | 0.219 | 18.000 | 41.588 | |
| 0.250 | 47.393 | |||
| 0.281 | 53.176 | |||
| 0.312 | 20 | 58.939 | ||
| 0.375 | STD | 70.588 | ||
| 0.438 | 30 | 82.152 | ||
| 0.500 | XHY | 93.450 | ||
| 0.562 | 40 | 104.666 | ||
| 0.625 | 115.978 | |||
| 20 | 0.250 | 20.000 | 52.733 | |
| 0.282 | 59.386 | |||
| 0.312 | 65.604 | |||
| 0.375 | 20 STD | 78.598 | ||
| 0.438 | 91.508 | |||
| 0.500 | 30 XHY | 104.130 | ||
| 0.594 | 40 | 123.110 | ||
| 0.625 | 129.328 | |||
| 0.688 | 141.901 | |||
| 24 | 0.250 | 24.000 | 63.413 | |
| 0.281 | 71.183 | |||
| 0.312 | 18.932 | |||
| 0.375 | 20 STD | 64.618 | ||
| 0.438 | 110.219 | |||
| 0.500 | XHY | 125.490 | ||
| 0.625 | 156.028 | |||
| 0.688 | 40 | 171.293 | ||
| 0.750 | 186.233 | |||
| 30 | 0.250 | 30.000 | 79.433 | |
| 0.281 | 89.189 | |||
| 0.312 | 10 | 98.925 | ||
| 0.375 | STD | 118.648 | ||
| 0.438 | 138.286 | |||
| 0.500 | 20 XHY | 157.530 | ||
| 0.625 | 30 | 196.078 | ||
| 0.688 | 215.380 | |||
| 0.750 | 234.293 | |||
| 36 | 0.250 | 36.000 | 95.453 | |
| 0.281 | 107.196 | |||
| 0.312 | 10 | 118.918 | ||
| 0.375 | STD | 142.678 | ||
| 0.438 | 166.353 | |||
| 0.500 | 20 XHY | 198.570 | ||
| 0.625 | 236.128 | |||
| 0.688 | 259.467 | |||
| 0.750 | 282.353 | |||
| 42 | 0.312 | 42.000 | 138.911 | |
| 0.375 | STD | 166.708 | ||
| 0.500 | XHY | 221.610 | ||
| 0.750 | 330.413 | |||
| 48 | 0.375 | 48.000 | STD | 190.738 |
| 0.438 | 222.487 | |||
| 0.500 | XHY | 253.650 | ||
| 0.750 | 378.473 | |||
| 0.875 | 440.383 |
Applications of ASTM B444 Tubing
Testing of ASTM A444 Tubes
Mechanical Properties of UNS N06219 Tube
| Grade | Yield Strength 0.2% Proof (Minimum) | Tensile Strength (Minimum) | Elongation (Minimum) | Hardness | |
| Rockwell B (Maximum) | Brinell (HB) (Maximum) | ||||
| ASTM B 444 | PSI – 75,000, MPA – 517 | PSI – 1,35,000, MPA -930 | 42.5 | – | – |
Equivalent of ASTM B444 Grade 2 Pipe
| Grade | Old British | UNS Number | Euronorm | Japanese | GOST | ||
| BS | En | No | AFNOR | ||||
| ASTM B444 | NA 21 | NiCr22Mo9Nb | N06625 | 2.4856 | NC22DNB4M | NCF 625 | ХН75МБТЮ |
Pressure Rating of ASTM B444 UNS N06625 Tube
| Size in Milimeter | Maximum internal pressure, ksi | ||||||
|---|---|---|---|---|---|---|---|
| 100°F | 200°F | 300°F | 400°F | 500°F | 600°F | 700°F | |
| 6 x1 | 940 | 940 | 930 | 921 | 907 | 888 | 869 |
| 8x1 | 681 | 681 | 675 | 668 | 658 | 644 | 630 |
| 16x1 | 324 | 324 | 321 | 318 | 313 | 307 | 300 |
| 8x2 | 1476 | 1476 | 1462 | 1447 | 1425 | 1395 | 1366 |
| 3 x 0.5 | 940 | 940 | 930 | 921 | 907 | 888 | 869 |
SB 444 UNS N06625 Material Chemical Composition
ASTM B444
Vietnam, South Korea, Japan and Sri Lanka are some of the ASME SB 444 Tube suppliers.
ASME SB 444 Tube Tolerance Chart
| Outside Diameter, Mm | Wall Thickness Tolerance, % | ID Tolerance, Mm | Outer Dia Tolerance, Mm |
|---|---|---|---|
| Outer Dia<2.4 | ±10 | +0/-0.05 | +0.05/-0 |
| 2.4≤Outer Dia<4.8 | ±10 | +0/-0.08 | +0.08/-0 |
| 4.8≤Outer Dia<12.7 | ±10 | +0/-0.10 | +0.10/-0 |
| 12.7<Outer Dia≤31.8 | ±10 | +0/-0.13 | +0.13/-0 |
B444 grade 2 Polished Tube Test Certificates
ASTM B444 UNS N06625 Tube Price List
| Price List | Price in USD | Price in UAE Dirham |
|---|---|---|
| ASTM B444 UNS N06625 Tube Size: 6.35 * 204 * 0.25 | US $ 0.10 | UAE 0.37 |
| SB 444 N06625 Tube Size: 12 * 0.75 | US $ 70.00 | UAE 257.00 |
ASME SB 444 UNS N06852 Alloys Seamless Pipe Dimensions
| ASTM B444 Pipe OD mm |
Pipe WT mm |
Sch | in. | Kg/m |
|---|---|---|---|---|
| 13.72 | 1.65 | 10S | 1/4 | 0.50 |
| 168.28 | 3.4 | 10S | 6 | 14.04 |
| 42.16 | 2.77 | 10S | 1¼ | 2.73 |
| 219.08 | 8.18 | 40S | 8 | 43.20 |
| 88.90 | 3.05 | 10S | 3 | 6.56 |
| 60.33 | 3.91 | 40S | 2 | 5.52 |
| 17.15 | 3.20 | 80S | 3/8 | 1.12 |
| 73.03 | 5.16 | 40S | 2½ | 8.77 |
| 26.67 | 2.87 | 40S | 3/4 | 1.71 |
| 13.72 | 2.24 | 40S | 1/4 | 0.64 |
| 60.33 | 8.742 | 160 | 2 | 11.29 |
| 26.67 | 2.11 | 10S | 3/4 | 1.30 |
| 73.03 | 3.05 | 10S | 2½ | 5.35 |
| 21.34 | 2.77 | 40S | 1/2 | 1.29 |
| 101.60 | 5.74 | 40S | 3½ | 13.78 |
| 219.08 | 18.23 | 120 | 8 | 91.30 |
| 17.15 | 2.31 | 40S | 3/8 | 0.86 |
| 219.08 | 12.7 | 80S | 8 | 65.63 |
| 33.40 | 3.38 | 40S | 1 | 2.54 |
| 42.16 | 6.352 | 160 | 1¼ | 5.69 |
| 114.30 | 8.56 | 80S | 4 | 22.67 |
| 88.90 | 7.62 | 80S | 3 | 15.51 |
| 48.26 | 3.68 | 40S | 1½ | 4.11 |
ASTM B444 UNS N06625 Tube Physical Properties
| Density | 0.305 | lb/cu in |
|---|---|---|
| 8.44 | gram/cc | |
| Melting Range | 2350 | °F |
| 1290 | °C | |
| Specific Heat | Btu/lb°F (J/kg°C) | |
| 0.096 | (-18°C) 0°F | |
| 0.102 | (93°C) 200°F | |
| 0.098 | (21°) 70°F | |
| Permeability | 1.0006 | upto 200 Oersted 15.9 kA/m |
| Curie Temperature | -196 | °C |
| <-320 | °F |
ASME SB 444 Tube Heat Treatment
| Condition of Supply | Heat Treatment After Forming | ||||
|---|---|---|---|---|---|
| Spring Temper /Annealed | at 260-370°C (500-700°F) | ||||
| Condition | Approx Tensile Strength | Approx Service Temp. | |||
| Annealed | 116-145 ksi | 800-1000 N/mm2 | -330 to +645°F | -200 to +340°C | |
SB 444 N06625 Tubing Documentation
ASTM B444 UNS N06625 Tube Delivery Address and Shipping Time
| Changes in Price Extra 5 % |
|
|---|---|
| Export to | Shipping Time in Days |
| Mayanmar | 25 |
| Uruguay | 60 |
| Maldives | 7 |
| Guyana | 60 |
| Taiwan | 15 |
| Bangladesh | 14 |
| Argentina | 45 |
| Brazil | 45-60 |
| Venezuela | 45 |
| Cambodia | 9 |
| Colombia | 45 |
| Bolivia | 45 |
| Ecuador | 60 |
| Chile | 45 |
| Paraguay | 60 |