What is the formula for C-channel cross-sectional area?

For a uniform-thickness C-channel: Area = 2 × (flange_width × thickness) + (web_height − 2 × thickness) × thickness. This accounts for the two horizontal flanges and the vertical web, avoiding double-counting the corners. The resulting area in m² multiplied by the length and density gives the weight.

What is the density of stainless steel 304?

Grade 304 — the most common austenitic stainless steel — has a certified density of 7930 kg/m³ (0.286 lb/in³). This is slightly higher than plain carbon steel (7850 kg/m³) due to chromium and nickel alloying elements.

What is the difference between a C-channel and a U-channel?

Both names describe the same cross-section profile. "C-channel" and "U-channel" refer to a structural shape with a flat back (web) and two parallel flanges projecting from the same side, forming a C or U shape. This calculator covers both.

Why is 2205 duplex stainless lighter than 316?

Duplex 2205 has a density of about 7805 kg/m³, slightly lower than austenitic 316 (8000 kg/m³). Despite being lighter, 2205 offers roughly twice the yield strength of 316, making it highly material-efficient for structural applications.

Can I calculate weight for multiple channel lengths?

Yes. Set the Quantity field to the number of pieces and the calculator multiplies the single-piece weight by that number, displaying both the total weight and the per-piece weight.

Does this calculator support imperial units?

Yes. You can enter flange width, web height, and thickness in inches, and length in feet or inches. The calculator converts all values to meters internally before applying the density formula.

How accurate are the results?

Results are theoretical weights based on nominal dimensions and standard grade densities per ASTM A276, EN 10088, and related specifications. Actual weights may vary slightly due to manufacturing tolerances, typically ±3–5%.

Stainless Steel Channel Weight Calculator

Name: Stainless Steel Channel Weight Calculator
Availability: InStock
Author: Nham Vu

Enter C-channel flange width, web height, wall thickness, and length to get the exact weight in kg and lbs for any stainless steel grade.

Channel Dimensions

Flange Width (B)

Horizontal leg length (each flange).

Web Height (H)

Overall height of the C-channel back (web).

Wall Thickness (T)

Uniform thickness of flanges and web.

Bar Length (L)

Stainless Steel Grade

Quantity (pieces)

Formula Reference

A = 2×(B×T) + (H−2T)×T
Weight (kg) = A × L × ρ

B = flange width, H = web height, T = wall thickness, L = length, ρ = grade density. All dimensions in meters.

Cross-Section Diagram

Enter dimensions on the left and click Calculate.

Stainless Steel Grade Densities

Grade	Type	kg/m³	lb/in³
304 / 304L	Austenitic	7930	0.286
316	Austenitic	8000	0.289
316L	Austenitic (LC)	7980	0.288
321	Ti-stabilized	7900	0.285
430	Ferritic	7700	0.278
410	Martensitic	7650	0.276
2205 Duplex	Duplex	7805	0.282
2507 S. Duplex	Super Duplex	7800	0.282

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Summary

Enter C-channel flange width, web height, wall thickness, and length to get the exact weight in kg and lbs for any stainless steel grade.

How it works

Enter the flange width (horizontal legs) in your preferred unit (mm, cm, or inches).
Enter the web height (vertical back) in the same or a different unit.
Enter the wall thickness — the uniform thickness applied to both flanges and the web.
Enter the bar length in meters, millimeters, feet, or inches.
Select the stainless steel grade; the correct certified density is applied automatically.
Optionally set a quantity to calculate total weight for a batch order.
Click Calculate Weight to see results in kg and lbs with a full dimensional breakdown.

Use cases

Estimating stainless steel material weight for structural fabrication and procurement.
Calculating freight and shipping costs for channel-section stock orders.
Verifying weight specs against supplier mill certificates for quality assurance.
Comparing grade choices (e.g., 304 vs 316) by weight and cost trade-off.
Preparing bills of materials (BOM) for food-processing, marine, or pharmaceutical equipment.
Checking structural load capacity for stainless channel frames and supports.
Generating quick weight estimates for architectural cladding and curtain-wall projects.
Teaching students and apprentices how channel cross-section area is calculated.

Frequently Asked Questions

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Last updated: 2026-05-23 · Reviewed by Nham Vu