What is the density of 304L?

8000 kg/m³ — the figure the weight calculators on this site use for 304L. The value is Outokumpu / stainless technical resources’s.

What is the chemical composition of 304L?

C ≤ 0.03, Si ≤ 0.75, Mn ≤ 2, P ≤ 0.045, S ≤ 0.03, Cr 17.5–19.5, Ni 8–12, N ≤ 0.1, in mass %, to ASTM A240. An element the standard sets no requirement for is left blank here rather than written as zero.

What are the mechanical properties of 304L?

Tensile ≥ 485 MPa, Yield ≥ 170 MPa, Elongation min ≥ 40 % — ASTM A240, Plate/Sheet/Strip, Annealed. Those are the standard’s requirements; the mill test certificate governs the metal delivered.

304L — properties and composition

Designations

UNS: S30403
EN number: 1.4307
EN name: X2CrNi18-9
AISI: 304L

Density

Density: 8000 kg/m³
Per: Outokumpu / stainless technical resources
Corrosion resistance: Good
Product forms: Sheet, plate, pipe, tube, bar

Chemical composition

Chemical composition — mass %
Standard	Product form	Basis	C	Si	Mn	P	S	Cr	Ni	N
ASTM A240	Plate/Sheet/Strip	Specification	≤ 0.03	≤ 0.75	≤ 2	≤ 0.045	≤ 0.03	17.5–19.5	8–12	≤ 0.1

mass %. A blank cell means the standard sets no requirement for that element, not zero. Single values are limits: "≤" a maximum, "≥" a minimum.

Reference values from the cited standards. They describe what the standard requires, not a specific heat of material; the mill test certificate governs what is delivered.

Mechanical properties

Mechanical properties
Standard	Product form	Condition / temper	Thickness	Test temperature	Yield	Tensile	Elongation min	Hardness max	Notes
ASTM A240	Plate/Sheet/Strip	Annealed	–	20 °C	0.2% offset ≥ 170 MPa	≥ 485 MPa	40 % (2 in / 50 mm gauge basis (product dependent))	92 HRB	Minimum values; confirm thickness-specific clauses in current edition.
EN 10088-2	Flat products	Solution annealed	≤ 75 mm	20 °C	Rp0.2 ≥ 200 MPa	500–700 MPa	45 % (A (thickness/product dependent))	–	Representative EN flat-product range; verify exact thickness table.

Each row is one standard, one product form and one condition — the values do not transfer across rows. A blank cell means the standard sets no requirement.

Reference values from the cited standards. They describe what the standard requires, not a specific heat of material; the mill test certificate governs what is delivered.

Typical applications

Welded fabrication, tanks, food/process equipment

Approximate equivalents

Approximate equivalents: equivalents are a technical reference, not a substitution instruction, verify against project specification.

Approximate equivalents
Grade	Systems	Relationship	Note	Key difference
304L	ASTM/AISI/UNS → EN	Same grade, another designation	Commonly cross-referenced designation.	Confirm governing product standard. Compared designation: 1.4307 / X2CrNi18-9.

Common questions

01What is the density of 304L?: 8000 kg/m³ — the figure the weight calculators on this site use for 304L. The value is Outokumpu / stainless technical resources’s.
02What is the chemical composition of 304L?: C ≤ 0.03, Si ≤ 0.75, Mn ≤ 2, P ≤ 0.045, S ≤ 0.03, Cr 17.5–19.5, Ni 8–12, N ≤ 0.1, in mass %, to ASTM A240. An element the standard sets no requirement for is left blank here rather than written as zero.
03What are the mechanical properties of 304L?: Tensile ≥ 485 MPa, Yield ≥ 170 MPa, Elongation min ≥ 40 % — ASTM A240, Plate/Sheet/Strip, Annealed. Those are the standard’s requirements; the mill test certificate governs the metal delivered.
04What is 304L used for?: Welded fabrication, tanks, food/process equipment