説明
目次
- Specifications of 904L Stainless Steel Flanges
- Size Range of SS 904L Flanges (in Inches)
- Chemical Composition of ASME SA182 904L Weld Neck Raised Face Flanges
- Mechanical & Physical Characteristics of DIN 1.4539 904L型フランジ
- Variety of Industrial Flanges Made from UNS N08904 ステンレス鋼
- 904L Stainless Steel Flange Equivalent Grades and Standards
- Thermal Properties of DIN 1.4539 Ring-Type Joint Flanges
- Applications of Stainless Steel F904L Flanges
- Physical Parameters of 904L Stainless Steel Flanges
- Weight Chart for ASTM A182 F904L Long Weld Neck Flanges
- ANSI B16.5 F904L Ring Type Joint Flange Dimension Chart
- Pressure Rating Details for Stainless Steel F904L Weld Neck Flanges
ステンレス製フランジ
904L stainless steel flanges are high-alloy components designed for use in highly corrosive environments. から製造 UNS N08904 (DIN 1.4539), these flanges offer exceptional resistance to strong reducing acids such as sulfuric acid, as well as excellent performance against chloride-induced pitting and crevice corrosion. With low carbon content and added copper, 904L flanges maintain strength while preventing intergranular corrosion after welding. 化学処理に広く使用されています, 海洋用途, 医薬品, and pollution control equipment. Available types include weld neck, 盲目, スリッポン, ソケット溶接, ラップジョイント, およびネジ付きフランジ, conforming to standards such as ASTM A182 and ANSI B16.5. Their durability and corrosion resistance make them ideal for critical piping systems in aggressive environments.
Specifications of 904L Stainless Steel Flanges
| 仕様 | ASTM A182 / ASME SA182 |
|---|---|
| クラス | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64など. |
| サイズ | 1/2” (15 注意) 48インチまで (1200注意) |
| 基準 | ANSI/ASME B16.5, B16.48, BS4504, B 16.47 シリーズA & B, BS 10, EN-1092, DIN, 等. |
Size Range of SS 904L Flanges (in Inches)
| 呼びパイプサイズ | フランジ外径 | フランジの厚さ | 隆起面の直径 | ハブの根元の直径 | ハブを通る長さ | 直径または内径 | ベベル部のハブの直径 | フィレットの半径 | ソケットの深さ | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 溶接ネック | スリップオンねじ付きソケット | ラップジョイント | スリップオンソケット | ラップジョイント | ||||||||
| ○ | Q | R | × | Y | Y | Y | W | B | H | r | Z | |
| 1/2 | 3-1/2 | 7/16 | 1-3/8 | 1-3/16 | 1-7/8 | 5/8 | 5/8 | .88 | .90 | .84 | 1/8 | 3/8 |
| 3/4 | 3-7/8 | 1/2 | 1-11/16 | 1-1/2 | 2-1/16 | 5/8 | 5/8 | 1.09 | 1.11 | 1.05 | 1/8 | 7/16 |
| 1 | 4-1/4 | 9/16 | 2 | 1-15/16 | 2-3/16 | 11/16 | 11/16 | 1.36 | 1.38 | 1.32 | 1/8 | 1/2 |
| 1-1/4 | 4-5/8 | 5/8 | 2-1/2 | 2-5/16 | 2-1/4 | 13/16 | 13/16 | 1.70 | 1.72 | 1.66 | 3/16 | 9/16 |
| 1-1/2 | 5 | 11/16 | 2-7/8 | 2-9/16 | 2-7/16 | 7/8 | 7/8 | 1.95 | 1.97 | 1.90 | 1/4 | 5/8 |
| 2 | 6 | 3/4 | 3-5/8 | 3-1/16 | 2-1/2 | 1 | 1 | 2.44 | 2.46 | 2.38 | 5/16 | 11/16 |
| 2-1/2 | 7 | 7/8 | 4-1/8 | 3-9/16 | 2-3/4 | 1-1/8 | 1-1/8 | 2.94 | 2.97 | 2.88 | 5/16 | 3/4 |
| 3 | 7-1/2 | 15/16 | 5 | 4-1/4 | 2-3/4 | 1-3/16 | 1-3/16 | 3.57 | 3.60 | 3.50 | 3/8 | 13/16 |
| 3-1/2 | 8-1/2 | 15/16 | 5-1/2 | 4-13/16 | 2-13/16 | 1-1/4 | 1-1/4 | 4.07 | 4.10 | 4.00 | 3/8 | 7/8 |
| 4 | 9 | 15/16 | 6-3/16 | 5-5/16 | 3 | 1-5/16 | 1-5/16 | 4.57 | 4.60 | 4.50 | 7/16 | 15/16 |
| 5 | 10 | 15/16 | 7.5/16 | 6-7/16 | 3-1/2 | 1-7/16 | 1-7/16 | 5.66 | 5.69 | 5.56 | 7/16 | 15/16 |
| 6 | 11 | 1 | 8-1/2 | 7-9/16 | 3-1/2 | 1-9/16 | 1-9/16 | 6.72 | 6.75 | 6.63 | 1/2 | 1-1/16 |
| 8 | 13-1/2 | 1-1/8 | 10-5/8 | 9-11/16 | 4 | 1-3/4 | 1-3/4 | 8.72 | 8.75 | 8.63 | 1/2 | 1-1/4 |
| 10 | 16 | 1-3/16 | 12-3/4 | 12 | 4 | 1-15/16 | 1-15/16 | 10.88 | 10.92 | 10.75 | 1/2 | 1-5/16 |
| 12 | 19 | 1-1/4 | 15 | 14-3/8 | 4-1/2 | 2-3/16 | 2-3/16 | 12.88 | 12.92 | 12.75 | 1/2 | 1-9/16 |
| 14 | 21 | 1-3/8 | 16-1/4 | 15-3/4 | 5 | 2-1/4 | 3-1/8 | 14.14 | 14.18 | 14.00 | 1/2 | 1-5/8 |
| 16 | 23-1/2 | 1-7/16 | 18-1/2 | 18 | 5 | 2-1/2 | 3-7/16 | 16.16 | 16.19 | 16.00 | 1/2 | 1-3/4 |
| 18 | 25 | 1-9/16 | 21 | 19-7/8 | 5-1/2 | 2-11/16 | 3-13/16 | 18.18 | 18.20 | 18.00 | 1/2 | 1-15/16 |
| 20 | 27-1/2 | 1-11/16 | 23 | 22 | 5-11/16 | 2-7/8 | 4-1/16 | 20.20 | 20.25 | 20.00 | 1/2 | 2-1/8 |
| 24 | 32 | 1-7/8 | 27-1/4 | 26-1/8 | 6 | 3-1/4 | 4-3/8 | 24.25 | 24.25 | 24.00 | 1/2 | 2-1/2 |
Chemical Composition of ASME SA182 904L Weld Neck Raised Face Flanges
| 学年 | C | ん | そして | P | S | Cr | モー | で | 銅 |
| SS 904L | 0.020 最大 | 2 最大 | 1.00 最大 | 0.040 最大 | 0.030 最大 | 19.00 – 23.00 | 4.00 – 5.00 最大 | 23.00 – 28.00 | 1.00 – 2.00 |
Mechanical & Physical Characteristics of DIN 1.4539 904L型フランジ
| 密度 | 融点 | 抗張力 | 降伏強さ (0.2%オフセット) | 伸長 |
| 7.95 g/cm3 | 1350 ℃ (2460 °F) | サイ – 71000 , MPa – 490 | サイ – 32000 , MPa – 220 | 35 % |
Variety of Industrial Flanges Made from UNS N08904 ステンレス鋼
 |  |  |  |
| ブラインドフランジ | 重ね継手フランジ | ロングウェルドネックフランジ | プレートフランジ |
 |  |  |  |
| 径違いフランジ | リング式ジョイントフランジ | スリップオンフランジ | ソケットウェルドフランジ |
 |  |  |  |
| ウェルドネックフランジ | 舌 & 溝フランジ | ネジ付き / ねじ込みフランジ | メガネブラインドフランジ |
904L Stainless Steel Flange Equivalent Grades and Standards
| 標準 | 材質番号. | 私たち | JIS | BS | KS | AFNOR | EN |
| SS 904L | 1.4539 | N08904 | SUS 904L | 904S13 | STS 317J5 | Z2 NCDU 25-20 | X1NiCrMoCu25-20-5 |
Thermal Properties of DIN 1.4539 Ring-Type Joint Flanges
DIN 1.4539, also known as Alloy 904L or UNS N08904, is an austenitic stainless steel designed for exceptional corrosion resistance, particularly in aggressive environments. When used in リング型ジョイント (RTJ) フランジ, its thermal properties are critical for ensuring sealing performance and dimensional stability under varying temperature conditions.
| 財産 | Value | Notes |
|---|---|---|
| 熱伝導率 (at 20°C) | ~12.0 W/m·K | Lower than carbon steel, typical of austenitic SS |
| Specific Heat Capacity (at 20°C) | ~500 J/kg·K | High thermal inertia, suitable for stable operation |
| Coefficient of Thermal Expansion | ~16.5 µm/m·K (from 20–100°C) | Important for gasket fit in RTJ sealing surfaces |
| 溶解範囲 | 1300 – 1390°C | Indicates safe upper limit for high-temp service |
| Maximum Continuous Service Temp | ~400°C (in oxidizing environments) | Beyond this, corrosion resistance may reduce |
| Thermal Shock Resistance | 適度 | Preheating and slow cooling are recommended in cyclic heating scenarios |
These thermal characteristics make DIN 1.4539 RTJ flanges ideal for high-temperature, high-pressure sealing applications in chemical processing, 製油所, and offshore installations, where thermal cycling and aggressive media are present. Proper design allowances for expansion and thermal stress are essential to maintain joint integrity.
Applications of Stainless Steel F904L Flanges
化学処理プラント
Resistant to strong acids such as sulfuric, phosphoric, and acetic acids, 904L weld neck flanges are ideal for piping systems handling corrosive fluids.油 & Gas Refineries
Used in offshore and onshore installations, especially where resistance to chloride-induced stress corrosion cracking is required.Desalination Plants
Excellent performance in high-chloride environments makes them suitable for seawater treatment and desalination piping systems.医薬品 & Food Processing Industries
Non-reactive and hygienic surface properties make F904L flanges suitable for clean-in-place (CIP) systems and sterile fluid pipelines.パルプ & Paper Industry
Used in bleach plants and acidic process lines due to their resistance to oxidizing media.海洋工学
Preferred in shipbuilding and offshore platforms due to their durability in saline water environments.Pollution Control Equipment
Employed in flue gas desulfurization (FGD) システム, especially in scrubber assemblies and acid gas lines.
Physical Parameters of 904L Stainless Steel Flanges
| 財産 | Value | 説明 |
|---|---|---|
| 密度 | 8.0 g/cm3 (8000 kg/m³) | High-density material suitable for pressure retention |
| 弾性率 | ~200 GPa (at 20°C) | Indicates good rigidity and deformation resistance |
| Poisson’s Ratio | ~0.30 | Ratio of lateral to axial strain |
| 熱伝導率 | ~12 W/m·K (at 20°C) | Lower than carbon steel; affects heat dissipation rate |
| Specific Heat Capacity | ~500 J/kg·K (at 20°C) | Reflects energy required to raise temperature |
| Electrical Resistivity | ~0.95 µΩ·m | Higher than common stainless grades, reducing galvanic effects |
| Magnetic Permeability | ~1.0 (non-magnetic in annealed condition) | Suitable for non-magnetic applications |
| 溶解範囲 | 1300 – 1390°C | Relevant for welding and high-temperature environments |
Weight Chart for ASTM A182 F904L Long Weld Neck Flanges
注記: 実際の重量は正確な寸法によって若干異なる場合があります, フランジの厚さ, 首の長さ, および製造公差.
| Pipe Normal Diam. | O.D. フランジ | Thk. Of Flange Min | Diam. の Hub | 隆起面の直径 | Length Hub.Y | Thread Length | Diam. of Bolt Circle | Diam. of Bolt Holes | Number of Bolts | Diam. の ボルト (インチ) | KG | ポンド | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| インチ | dn | ○ | C | × | G | Y | T | 紀元前 | BH | BN | BD | ||
| 1/2″ | 15 | 89.00 | 11.20 | 30.20 | 35.10 | 15.70 | 15.70 | 60.50 | 15.80 | 4 | 1/2″ | 0.4 | 0.9 |
| 3/4″ | 20 | 98.50 | 12.70 | 38.10 | 42.90 | 15.70 | 15.70 | 69.90 | 15.80 | 4 | 1/2″ | 0.7 | 1.5 |
| 1″ | 25 | 108.00 | 14.20 | 49.30 | 50.80 | 17.50 | 17.50 | 79.30 | 15.80 | 4 | 1/2″ | 0.8 | 1.8 |
| 1-1/4″ | 32 | 117.50 | 15.70 | 58.70 | 63.50 | 20.60 | 20.60 | 88.90 | 15.80 | 4 | 1/2″ | 1.2 | 2.6 |
| 1-1/2″ | 40 | 127.00 | 17.50 | 65.00 | 73.20 | 22.40 | 22.40 | 98.60 | 15.80 | 4 | 1/2″ | 1.5 | 3.3 |
| 2″ | 50 | 152.50 | 19.10 | 77.70 | 91.90 | 25.40 | 25.40 | 120.70 | 19.10 | 4 | 5/8″ | 2.3 | 5.1 |
| 2-1/2″ | 65 | 178.00 | 22.40 | 90.40 | 104.60 | 28.40 | 28.40 | 139.70 | 19.10 | 4 | 5/8″ | 3.7 | 8.1 |
| 3″ | 80 | 190.50 | 23.90 | 108.00 | 127.00 | 30.20 | 30.20 | 152.40 | 19.10 | 4 | 5/8″ | 4.1 | 9 |
| 3-1/2″ | 90 | 216.00 | 23.90 | 122.20 | 139.70 | 31.80 | 31.80 | 177.80 | 19.10 | 8 | 5/8″ | 5.1 | 11.2 |
| 4″ | 100 | 228.50 | 23.90 | 134.90 | 157.20 | 33.30 | 33.30 | 190.50 | 19.10 | 8 | 5/8″ | 5.9 | 13 |
| 5″ | 125 | 254.00 | 23.90 | 163.60 | 185.70 | 36.60 | 36.60 | 215.90 | 22.40 | 8 | 3/4″ | 7 | 15.4 |
| 6″ | 150 | 279.50 | 25.40 | 192.00 | 215.90 | 39.60 | 39.60 | 241.30 | 22.40 | 8 | 3/4″ | 8.4 | 18.5 |
| 8″ | 200 | 343.00 | 28.40 | 246.10 | 269.70 | 44.50 | 44.50 | 298.50 | 22.40 | 8 | 3/4″ | 13 | 28.6 |
| 10″ | 250 | 406.50 | 30.20 | 304.80 | 323.90 | 49.30 | 49.30 | 362.00 | 25.40 | 12 | 7/8″ | 18 | 39.5 |
| 12″ | 300 | 482.50 | 31.80 | 365.30 | 381.00 | 55.60 | 55.60 | 431.80 | 25.40 | 12 | 7/8″ | 29 | 64 |
| 14″ | 350 | 533.50 | 35.10 | 400.10 | 412.80 | 57.20 | 57.20 | 476.30 | 28.50 | 12 | 1″ | 39 | 86 |
| 16″ | 400 | 597.00 | 36.60 | 457.20 | 469.90 | 63.50 | 63.50 | 539.80 | 28.50 | 16 | 1″ | 47 | 103 |
| 18″ | 450 | 635.00 | 39.60 | 505.00 | 533.40 | 68.30 | 68.30 | 577.90 | 31.80 | 16 | 1 1/8″ | 57 | 126 |
| 20″ | 500 | 698.50 | 42.90 | 558.80 | 584.20 | 73.20 | 73.20 | 635.00 | 31.80 | 20 | 1 1/8″ | 76 | 167 |
| 24″ | 600 | 813.00 | 47.80 | 663.40 | 692.20 | 82.60 | 82.60 | 749.30 | 35.10 | 20 | 1 1/4″ | 97 | 214 |
ANSI B16.5 F904L Ring Type Joint Flange Dimension Chart
材料: ASTM A182 F904L (UNS N08904, DIN 1.4539)
Unit: mm (ミリメートル), unless noted
| 標準 | クラス | 直径 | ボルト円直径 | ボルトの数 | ボルトサイズ | ボルト穴径 |
|---|---|---|---|---|---|---|
| AS4087 | PN14 | 95 | 67 | 4 | M12 | 14 |
| として 2129 フランジ | 表C | 95 | 67 | 4 | 13 | 14 |
| 表D | 95 | 67 | 4 | 13 | 14 | |
| 表E | 95 | 67 | 4 | 13 | 14 | |
| 表F | 95 | 67 | 4 | 13 | 14 | |
| 表H | 114 | 83 | 4 | 16 | 17 | |
| 表J | 114 | 83 | 4 | 16 | 17 | |
| ANSI B16.5 | ansi 150 | 89 | 60 | 4 | 13 | 16 |
| ansi 300 | 95 | 67 | 4 | 13 | 16 | |
| ansi 600 | 95 | 67 | 4 | 13 | 16 | |
| ansi 900 | 121 | 83 | 4 | 19 | 22 | |
| ansi 1500 | 121 | 83 | 4 | 19 | 22 | |
| ISO 7005 (DIN) フランジ | PN6 | 80 | 55 | 4 | M10 | 11 |
| PN10 | 95 | 65 | 4 | M12 | 14 | |
| PN16 | 95 | 65 | 4 | M12 | 14 | |
| PN20 | 90 | 60.5 | 4 | M14 | 16 | |
| PN25 | 95 | 65 | 4 | M12 | 14 | |
| PN40 | 95 | 65 | 4 | M12 | 14 |
Pressure Rating Details for Stainless Steel F904L Weld Neck Flanges
| Flange Class | Max Pressure @ 100°F (38℃) | Max Pressure @ 200°F (93℃) | Max Pressure @ 400°F (204℃) |
|---|---|---|---|
| クラス 150 | 285 psi (19.6 バー) | 235 psi (16.2 バー) | 170 psi (11.7 バー) |
| クラス 300 | 740 psi (51.0 バー) | 605 psi (41.7 バー) | 460 psi (31.7 バー) |
| クラス 600 | 1480 psi (102.0 バー) | 1210 psi (83.4 バー) | 920 psi (63.4 バー) |
| クラス 900 | 2220 psi (153.1 バー) | 1815 psi (125.1 バー) | 1380 psi (95.1 バー) |
| クラス 1500 | 3705 psi (255.4 バー) | 3025 psi (208.5 バー) | 2295 psi (158.3 バー) |
| クラス 2500 | 6170 psi (425.3 バー) | 5040 psi (347.6 バー) | 3825 psi (263.8 バー) |
Key Notes:
These ratings apply to F904L weld neck flanges manufactured in accordance with ASME B16.5 using ASTM A182 F904L forging material.
904L has excellent corrosion resistance, especially in acidic and chloride-rich environments, making it suitable for high-pressure chemical and marine systems.
Actual operating pressure should also consider factors like gasket type, bolt torque, flange face finish, and system design.
If you need pressure ratings at higher temperatures (例えば, 600°F or 800°F), or want EN 1092-1 PN rating equivalents, I can provide that as well.
