904L Stainless Steel Plate

904L stainless steel is a non-stabilized austenitic stainless steel with low carbon content. This high alloy stainless steel is added with copper to improve its resistance to strong reducing acids, such as sulphuric acid.

Physical Properties

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

Grade Specification Comparison

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

Possible Alternative Grades

Grade Reasons for choosing grade 904L
316L A lower cost alternative, but with much lower corrosion resistance.
6Mo A higher resistance to pitting and crevice corrosion is needed.
2205 A very similar corrosion resistance, with the 2205 having higher mechanical strength, and at a lower cost to 904L. (2205 not suitable for temperatures above 300°C.)
Super Duplex Higher corrosion resistance is needed, together with a higher strength than 904L.

Stainless Steel Seamless Pipe

Standard ASTM A213/A213M ASTM A312/A312M JIS G3459
Grade TP304, TP304L, TP316, TP316L, TP317, TP317L TP304, TP304L, TP316, TP316L, TP317, TP317L SUS 304TB, SUS 304LTB, SUS 316TB, SUS 316LTB
Yield Strength ≥170 MPa / ≥205 MPa
Tensile Strength ≥485 MPa / ≥515 MPa
Elongation ≥35%
Hardness HRB < 90
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