Views: 7 Author: Site Editor Publish Time: 2024-12-17 Origin: Site
ASTM A105N weld neck flange has a structure with a neck and a round tube transition, which can be butt-welded to the pipe to form a firm pipe connection point. Due to the use of ASTM A105N material, carbon steel weld neck flange has high strength and rigidity, and can withstand greater pressure and load. At the same time, it also has a certain corrosion resistance and is suitable for a variety of working environments and media.
We are manufacturer, trader, stockist, supplier and exporter of ASTM A105 Weld Neck Flange. Last week, we received an order for ASTM A105 Weld Neck Flange 4" 150#, SCH40.Carbon steel weld neck flanges are widely used in various pipeline systems, especially in situations where they need to withstand higher pressures and temperatures. It is commonly used in pipeline projects in the petroleum, chemical, natural gas, water treatment, electric power and other industries, as well as in the connection of water pumps, valves and other equipment.
Specification of ASTM A105N Weld Neck Flange
Shape Type | Regular and Long Neck |
Sealing Face | RF, FF, FTJ |
Size Range | 1/2″ – 60″/ DN15 – DN1200 |
Pressure Rating | Class 150, 300, 600, 900, 1500, 2500lb |
Standard | ASME B16.5, ASME B16.47 Series A/B |
Carbon steel | ASTM A105 / A105N |
The appropriate carbon content in ASTM A105N weld neck flanges gives the material a certain strength, while the manganese element helps to improve the toughness and machinability of the material.
ASTM A105N Chemical Composition
CHEMICAL | LIMITS | C | Mn | P | S | Si | Cu | Ni | Cr | Mo | V |
ASTM A105N | MIN | 0.600 | 0.10 | ||||||||
MAX | 0.350 | 1.050 | 0.040 | 0.050 | 0.35 | 0.400 | 0.40 | 0.300 | 0.120 | 0.080 |
A105N weld neck flange has high yield strength and tensile strength. The yield strength is generally around 250MPa, and the tensile strength is around 485MPa. This strength characteristic enables it to withstand a certain pressure and is suitable for medium and low pressure pipeline systems.
ASTM A105N Mechanical Property
MATERIAL | T.S (MPA) | Y.S (MPA) | EL % | R/A % | HARDNESS |
ASTM A105N | 485min | 250 min | 22 min | 30 min | 197 max |
4”Class 150 lb Weld Neck Flange Dimensions
ASTM A105N weld neck flange specifications are mainly applicable to sizes ranging from 1/2″ – 60″ (DN15 – DN1200).
NPS | A | B | C | D | E | F | G | H | I | J | W |
inch | inch | inch | inch | inch | inch | inch | No. of Holes | inch | inch | kg/pc | |
mm | mm | mm | mm | mm | mm | mm | mm | mm | |||
1/2 | 3.500 | 0.620 | 0.440 | 1.880 | 0.840 | 1.190 | 1.380 | 4 | 0.620 | 2.380 | 0.48 |
88.90 | 15.70 | 11.20 | 47.80 | 21.30 | 30.20 | 35.00 | 15.70 | 60.45 | |||
3/4 | 3.880 | 0.820 | 0.500 | 2.060 | 1.050 | 1.500 | 1.690 | 4 | 0.620 | 2.750 | 0.71 |
98.60 | 20.80 | 12.70 | 52.30 | 26.70 | 38.10 | 42.90 | 15.70 | 69.85 | |||
1 | 4.250 | 1.050 | 0.560 | 2.190 | 1.320 | 1.940 | 2.000 | 4 | 0.620 | 3.120 | 1.01 |
108.0 | 26.70 | 14.20 | 55.60 | 33.50 | 49.30 | 50.80 | 15.70 | 79.25 | |||
1-1/4 | 4.620 | 1.380 | 0.620 | 2.250 | 1.660 | 2.310 | 2.550 | 4 | 0.620 | 3.500 | 1.33 |
117.3 | 35.10 | 15.70 | 57.15 | 42.20 | 58.70 | 63.50 | 15.70 | 88.90 | |||
1-1/2 | 5.000 | 1.610 | 0.690 | 2.440 | 1.900 | 2.560 | 2.880 | 4 | 0.620 | 3.880 | 1.72 |
127.0 | 40.90 | 17.50 | 62.00 | 48.30 | 65.00 | 73.15 | 15.70 | 98.60 | |||
2 | 6.000 | 2.070 | 0.750 | 2.500 | 2.380 | 3.060 | 3.620 | 4 | 0.750 | 4.750 | 2.58 |
152.4 | 52.60 | 19.10 | 63.50 | 60.45 | 77.70 | 91.90 | 19.10 | 120.7 | |||
2-1/2 | 7.000 | 2.470 | 0.880 | 2.750 | 2.880 | 3.560 | 4.120 | 4 | 0.750 | 5.500 | 4.11 |
177.8 | 62.70 | 22.40 | 69.85 | 73.15 | 90.40 | 104.6 | 19.10 | 139.7 | |||
3 | 7.500 | 3.070 | 0.940 | 2.750 | 3.500 | 4.250 | 5.000 | 4 | 0.750 | 6.000 | 4.92 |
190.5 | 78.00 | 23.90 | 69.85 | 88.90 | 108.0 | 127.0 | 19.10 | 152.4 | |||
3-1/2 | 8.500 | 3.550 | 0.940 | 2.810 | 4.000 | 4.810 | 5.500 | 8 | 0.750 | 7.000 | 6.08 |
215.9 | 90.20 | 23.90 | 71.40 | 101.6 | 122.2 | 139.7 | 19.10 | 177.8 | |||
4 | 9.000 | 4.030 | 0.940 | 3.000 | 4.500 | 5.310 | 6.190 | 8 | 0.750 | 7.500 | 6.84 |
228.6 | 102.4 | 23.90 | 76.20 | 114.3 | 134.9 | 157.2 | 19.10 | 190.5 | |||
5 | 10.00 | 5.050 | 0.940 | 3.500 | 5.560 | 6.440 | 7.310 | 8 | 0.880 | 8.500 | 8.56 |
254.0 | 128.3 | 23.90 | 88.90 | 141.2 | 163.6 | 185.7 | 22.40 | 215.9 | |||
6 | 11.00 | 6.070 | 1.000 | 3.500 | 6.630 | 7.560 | 8.500 | 8 | 0.880 | 9.500 | 10.6 |
279.4 | 154.2 | 25.4 | 88.90 | 168.4 | 192.0 | 215.9 | 22.40 | 241.3 | |||
8 | 13.50 | 7.980 | 1.120 | 4.000 | 8.630 | 9.690 | 10.62 | 8 | 0.880 | 11.75 | 17.6 |
342.9 | 202.7 | 28.40 | 101.6 | 219.2 | 246.1 | 269.7 | 22.40 | 298.5 | |||
10 | 16.00 | 10.02 | 1.190 | 4.000 | 10.75 | 12.00 | 12.75 | 12 | 1.000 | 14.25 | 24.0 |
406.4 | 254.5 | 30.20 | 101.6 | 273.0 | 304.8 | 323.8 | 25.40 | 362.0 | |||
12 | 19.00 | 12.00 | 1.250 | 4.500 | 12.75 | 14.38 | 15.00 | 12 | 1.000 | 17.00 | 36.5 |
482.6 | 304.8 | 31.75 | 114.3 | 323.8 | 365.3 | 381.0 | 25.40 | 431.8 | |||
14 | 21.00 | 1.380 | 5.000 | 14.00 | 15.75 | 16.25 | 12 | 1.120 | 18.75 | 48.4 | |
533.4 | 35.10 | 127.0 | 355.6 | 400.1 | 412.7 | 28.40 | 476.3 | ||||
16 | 23.50 | 1.440 | 5.000 | 16.00 | 18.00 | 18.50 | 16 | 1.120 | 21.25 | 60.6 | |
596.9 | 36.60 | 127.0 | 406.4 | 475.2 | 469.9 | 28.40 | 539.8 | ||||
18 | 25.00 | 1.560 | 5.500 | 18.00 | 19.88 | 21.00 | 16 | 1.250 | 22.75 | 68.3 | |
635.0 | 39.60 | 139.7 | 457.2 | 505.0 | 533.4 | 31.75 | 577.9 | ||||
20 | 27.50 | 1.690 | 5.690 | 20.00 | 22.00 | 23.00 | 20 | 1.250 | 25.00 | 84.5 | |
698.5 | 42.90 | 144.5 | 508.0 | 558.8 | 584.2 | 31.75 | 635 | ||||
24 | 32.00 | 1.880 | 6.000 | 24.00 | 26.12 | 27.25 | 20 | 1.380 | 29.50 | 115 | |
812.8 | 47.80 | 152.4 | 609.6 | 663.4 | 692.1 | 35.10 | 749.3 |
Differences between ASTM A105 and 105N
ASTM A105N is similar to A105 in chemical composition, but may be more stringent in the control of certain trace elements. The "N" in A105N usually indicates the normalized state. Normalizing is a heat treatment process in which the material is heated above the critical temperature and then cooled in air.
This heat treatment process may have an effect on the internal structure of the material, thereby affecting its mechanical properties. A105N after normalization may have a more uniform grain structure, which is more advantageous in some applications that require higher material uniformity.
Application
A105 weld neck flange is widely used in medium and low pressure pipeline systems in general industrial fields due to its relatively low cost and basic performance that can meet the requirements of many common applications.
ASTM A105N weld neck flange is more suitable for application scenarios with higher material performance requirements. In the oil and gas industry, A105N may be a better choice for some medium and low pressure pipeline systems with high reliability requirements, such as key pipeline connections within gas processing plants or in some oil production areas with high pipeline integrity requirements.
