Stainless Steel 304 & 316 Mass Calculator
High-precision mass and theoretical weight estimator for 304, 304L, 316, and 316L stainless steel plates, round bars, and tubular products based on ASTM A240 and EN 10088 material specifications.
- • Grade 304 / 304L Density: 7.93 g/cm³ (0.286 lb/in³)
- • Grade 316 / 316L Density: 7.98 g/cm³ (0.288 lb/in³)
- • Plate Metric Formula: W (kg) = L (m) × W (m) × T (mm) × Density
- • Round Bar Metric Formula: W (kg) = π × (D/2)² × L × Density / 10⁶
1. Select Alloy, Shape & Dimensions
Metallurgical Mass Principles: Grade 304 vs Grade 316
Calculating theoretical mass for austenitic stainless steel requires precise physical density values. While carbon steel is standardized at $7.85\text{ g/cm}^3$, 300-series stainless alloys contain substantial Nickel ($8.90\text{ g/cm}^3$), Chromium ($7.19\text{ g/cm}^3$), and Molybdenum ($10.28\text{ g/cm}^3$).
ASTM A240 & EN 10088 Rolling Tolerances
In accordance with ASTM A240 / A480 and EN 10088-2, cold-rolled and hot-rolled stainless steel sheets carry manufacturing thickness tolerances. Actual delivered batch mass will reflect mill thickness variations within international standards.
Frequently Asked Questions
Q: Why is 316 stainless steel heavier than 304 stainless steel?
Grade 316 contains 2% to 3% Molybdenum (Mo), an element with a high atomic mass and density ($10.28\text{ g/cm}^3$). This raises the alloy's overall density from $7.93\text{ g/cm}^3$ (304) to $7.98\text{ g/cm}^3$ (316).
Q: What is the quick multiplier formula for 304 stainless steel plate mass per m²?
For a 1 mm thick SS304 plate, the mass is exactly $7.93\text{ kg per square meter}\ (\text{kg/m}^2)$. Multiply $7.93$ by the thickness in millimeters to instantly obtain mass per square meter.