what is schedule 40 316 stainless steel pipe dimensions？

what is schedule 40 316 stainless steel pipe?

Schedule 40 316 stainless steel pipe is a corrosion-resistant, moderate-thickness piping (ASTM A312) featuring 4% molybdenum for enhanced durability against chlorides. It is commonly used in marine environments, chemical processing, pharmaceutical, and food-grade applications, often for handling liquids or gases at moderate pressures.

 

What does schedule 40 pipe mean?

Schedule 40 pipe is a standardized pipe classification denoting a specific, moderate wall thickness, commonly used for water lines, residential plumbing, and low-pressure structural applications.

 

What is the thickness of  316 Schedule 40 stainless pipe?

Schedule 40S stainless steel pipes (Grades 316/316L) feature wall thicknesses that vary according to their Nominal Pipe Size (NPS), ranging from 0.068 inches (1.73 mm) for 1/8-inch pipes to 0.500 inches (12.70 mm) for 12-inch pipes. Common specifications include 1-inch (with a wall thickness of 0.133 inches) and 2-inch (with a wall thickness of 0.154 inches) sizes; these dimensions are specifically designed for medium-pressure applications where corrosion resistance is a critical requirement.

 

schedule 40 316 stainless steel pipe dimensions

Size	O.D.	Wall Thickness	Weight
1/8 inches	0.405 inches 10.287 mm	0.068 inches 1.7272 mm	0.245lbs/ft 0.36460018 kg/m
1/4 inches	0.54 inches 13.716 mm	0.088 inches 2.2352 mm	0.425lbs/ft 0.6324697 kg/m
3/8 inches	0.675 inches 17.145 mm	0.091 inches 2.3114 mm	0.568lbs/ft 0.845277152 kg/m
1/2 inches	0.84 inches 21.336 mm	0.109 inches 2.7686 mm	0.851lbs/ft 1.266427564 kg/m
3/4 inches	1.05 inches 26.67 mm	0.113 inches 2.8702 mm	1.131lbs/ft 1.683113484 kg/m
1 inches	1.315 inches 33.401 mm	0.133 inches 3.3782 mm	1.68lbs/ft 2.50011552 kg/m
1 1/4 inches	1.66 inches 42.164 mm	0.140 inches 3.556 mm	2.274lbs/ft 3.384084936 kg/m
1 1/2 inches	1.9 inches 48.26 mm	0.145 inches 3.683 mm	2.719lbs/ft 4.046317916 kg/m
2 inches	2.375 inches 60.325 mm	0.154 inches 3.9116 mm	3.654lbs/ft 5.437751256 kg/m
2 1/2 inches	2.875 inches 73.025 mm	0.203 inches 5.1562 mm	5.795lbs/ft 8.62391038 kg/m
3 inches	3 1/2 inches 88.90 mm	0.216 inches 5.4864 mm	7.579lbs/ft 11.278794956 kg/m
3 1/2 inches	4 inches 101.6 mm	0.226 inches 5.7404 mm	9.113lbs/ft 13.561638532 kg/m
4 inches	4.500 inches 114.3 mm	0.237 inches 6.0198 mm	10.794lbs/ft 16.063242216 kg/m
5 inches	5.563 inches 141.3002 mm	0.258 inches 6.5532 mm	14.623lbs/ft 21.761422172 kg/m
6 inches	6.625 inches 168.275 mm	0.280 inches 7.112 mm	18.981lbs/ft 28.246840884 kg/m
8 inches	8.625 inches 219.075 mm	0.322 inches 8.1788 mm	28.564lbs/ft 42.507916496 kg/m
10 inches	10.75 inches 273.05 mm	0.365 inches 9.271 mm	40.498lbs/ft 60.267665672 kg/m
12 inches	12.75 inches 323.85 mm	0.375 inches 9.5250 mm	49.580lbs/ft 73.78317112 kg/m

 

Click to get the 316SS pipe tolerance chart

 

Is there a difference between SCH 40 and SCH 40S?

In the stainless steel industry, the "S" stands for Stainless. According to ASME B36.19M:
For sizes up to NPS 10, SCH 40 and SCH 40S dimensions are identical.
For NPS 12 and larger, SCH 40 (standard steel) and SCH 40S (stainless steel) wall thicknesses may differ. Always verify the "S" suffix when ordering stainless steel.

 

Can 316 SCH 40 pipe be used for high-temperature applications?

Yes. 316 stainless steel has excellent heat resistance. However, for continuous service above 425°C (800°F), the low-carbon version (316L) is often preferred to prevent sensitization and maintain corrosion resistance near weld joints.

 

How do I calculate the weight of a 316 SCH 40 pipe?

You can use the general formula for stainless steel pipes:

Weight ( kg/m ) = (OD - WT) × WT × 0.02491
(Where OD = Outside Diameter in mm, WT = Wall Thickness in mm)
Note: 0.02491 is the constant for 316 stainless steel (Density ≈ 7.98 g/cm³).