ASTM A240 904L Stainless Steel Plate

Composition

The table below provides the compositional ranges of grade 904L stainless steels:

Table 1. Composition ranges of grade 904L stainless steels

Grade		C	Mn	Si	P	S	Cr	Mo	Ni	Cu
904L	min. max.	- 0.02	- 2	- 1	- 0.045	- 0.035	19 23	4 5	23 28	1 2

Mechanical Properties

The typical mechanical properties of grade 904L stainless steels are given in the table below:

Table 2. Mechanical properties of grade 904L stainless steels

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness
				Rockwell B (HR B)	Brinell (HB)
904L	490	220	36	70-90 typical	150

Physical Properties

The physical properties of grade 904L stainless steels are tabulated below:

Table 3. Typical physical properties of grade 904L stainless steels

Grade	Density (kg/m3)	Elastic Modulus (GPa)	Mean Co-eff of Thermal Expansion (µm/m/°C)			Thermal Conductivity (W/m.K)		Specific Heat 0-100°C (J/kg.K)	Elec Resistivity (nΩ.m)
			0-100°C	0-315°C	0-538°C	At 20°C	At 500°C
904L	7900	190	15	-	-	11.5	-	500	952

Grade Specification Comparison

The following table outlines the approximate grade comparisons of 904L stainless steels:

Table 4. Grade specifications of grade 904L stainless steels

Grade	UNS No	Old British		Euronorm		Swedish SS	Japanese JIS
		BS	En	No	Name
904L	N08904	904S13	-	1.4539	X1NiCrMoCuN25-20-5	2562	-