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ASTM A403 WP 316 Stainless Steel Elbow

Stainless Steel Pipe Fittings

ASTM A403 WP 316 Stainless Steel Elbow Specifications

Material Grades

  • ASTM A403 WP 316
  • UNS S31600
  • Werkstoff No. 1.4401 / 1.4436
  • JIS SUS 316
  • BS 316S31 / 316S33
  • EN X5CrNiMo17-12-2 / X3CrNiMo17-13-3
  • AFNOR Z7CND17-11-02

Elbow Types

  • 45 Degree Elbow
  • 90 Degree Elbow
  • 180 Degree Elbow
  • Long Radius Elbow
  • Short Radius Elbow
  • 3D Elbow
  • Seamless / Welded Elbow

Manufacturing Process

  • Pressing
  • Piercing
  • Hammering
  • Rolling
  • Bending
  • Upsetting
  • Extruding
  • Machining

Standards & Dimensions

  • ASTM A403
  • ASME B16.9
  • ASME B16.28
  • MSS SP-43
  • JIS B2312
  • JIS B2313
  • DIN / EN / ISO / JIS

Size & Schedule

  • Size: NPS 1/2" – NPS 48"
  • Schedule: 20S to Schedule 160
  • Standard & Custom Sizes
  • Long Radius Configuration
  • Short Radius Configuration
  • Custom Dimensions Available

Testing & Inspection

  • Dimensional Inspection
  • Visual Inspection
  • Positive Material Identification (PMI)
  • Ultrasonic Testing
  • Radiography Testing
  • Non-Destructive Testing (NDT)

Mechanical Properties

  • Tensile Strength: 515 MPa Min.
  • Yield Strength: 205 MPa Min.
  • Elongation: 40% Min.
  • Rockwell Hardness: 95 HRB Max.
  • Brinell Hardness: 217 HB Max.

Value Added Services

  • Heat Treatment
  • Solution Annealing
  • Pickling & Passivation
  • Shot Blasting
  • Precision Machining
  • Custom Finishing

Stainless Steel 316 Elbow Dimensions Chart

NPS ND (mm) Outside Diameter (D) mm 90° LR Center-to-End (A) mm 45° LR Center-to-End (B) mm 3D 90° Center-to-End (A) mm 3D 45° Center-to-End (B) mm
1/21521.33816––
3/42026.738195724
12533.438227631
1 1/43242.248259539
1 1/24048.3572911447
25060.3763515263
2 1/26573.0954419079
38088.91145122995
3 1/290101.613357267111
4100114.315264305127
5125141.319079381157
6150168.322995457189
8200219.1305127610252
10250273.0381159762316
12300323.8457190914378
14350355.65332221067441
16400406.46102541219505
18450457.06862861372568
20500508.07623181524632
22550559.08383431676694
24600610.09143811829757
26650660.09914061981821
28700711.010674382134883
30750762.011434702286964
32800813.0121950224381010
34850864.0129553325911073
36900914.0137256527431135
38950965.0144860028961200
4010001016.0152463230481264
4210501067.0160066032001326
4411001118.0167669533531389
4611501168.0175372735051453
4812001219.0182975936581516

Stainless Steel 316 Elbow Weight Chart

NPS Weight (LBS) Weight (KG)
1/20.090.04
3/40.090.04
10.250.11
1 1/40.380.17
1 1/20.400.18
20.810.37
2 1/21.750.79
32.631.19
3 1/23.501.59
44.502.04
57.503.40
612.005.44
823.0010.43
1043.0019.50
1262.0028.12
1480.0036.29
16100.0045.36
18126.0057.15
20160.0072.57
22197.0089.36
24238.00107.95
26275.00124.74
30367.00166.47
36531.00240.86

Chemical Composition

Carbon (C)
0.07% Max
Chromium (Cr)
16.50–18.50%
Nickel (Ni)
10.00–13.00%
Molybdenum (Mo)
2.00–2.50%
Manganese (Mn)
2.0% Max
Silicon (Si)
1.0% Max
Phosphorus (P)
0.05% Max
Sulfur (S)
0.02% Max
Iron (Fe)
Balance

Physical Properties

Density 8000 kg/m³
Density 8.0 g/cm³
Elastic Modulus 193 GPa
Mean Coefficient of Thermal Expansion (0–100°C) 17.2 µm/m·°C
Mean Coefficient of Thermal Expansion (0–315°C) 17.8 µm/m·°C
Mean Coefficient of Thermal Expansion (0–538°C) 18.4 µm/m·°C
Thermal Conductivity at 100°C 16.2 W/m·K
Thermal Conductivity at 500°C 21.5 W/m·K
Specific Heat 500 J/kg·K
Electrical Resistivity 720 nΩ·m

Mechanical Performance

515
MPa
Tensile Strength
205
MPa
Yield Strength
40
%
Elongation
95
HRB
Rockwell B Hardness
217
HB
Brinell Hardness
1375
°C
Approx. Melting Range


MANUFACTURING

Forging Process

Each flange follows a rigorous 8-step forging and quality-control process to ensure conformance with ASTM A182 and ASME standards.

1

Material Selection

Prime 304 stainless steel billet sourced and certified.

2

Billet Preparation

Heat to 1100°C – 1250°C for optimal forgeability.

3

Forging

Shape billet into flange geometry under controlled pressure.

4

Heat Treatment

Solution anneal at 1040°C – 1120°C, then quench.

5

Machining & Finishing

CNC machining, drilling, and surface finishing.

6

Testing & Inspection

Tensile, hardness, PMI, visual and impact tests performed.