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Mechanical properties of stainless steel

The mechanical properties of stainless steel vary depending on the chemical composition of each grade. For example austenitic grades generally have a higher tensile strength than ferritics.

Below is a table detailing the mechanical properties of some of the stainless steel grades that are supplied by thyssenkrupp Materials (UK).

If the grade that you arelooking for isn't present, or, if you need to know any more information, you can either visit our chemical compositions page or our stainless steel data sheets.

All data is to EN110088-2

Austenitic Grades

GradeEN SpecificationFormMax Thickness (mm)0.2% - Proof Strength (min MPa)a1% - Proof Strength (min MPa)aTensile Strength (MPa)
3041.4301Cold rolled strip6.0230260540 - 750
3041.4301Hot rolled strip13.5210250520 - 720
3041.4301Hot rolled plate75.0210250520 - 720
304L1.4307Cold rolled strip6.0220250520 - 700
304L1.4307Hot rolled strip13.5200240520 - 700
304L1.4307Hot rolled plate75.0200240500 - 700
3161.4401Cold rolled strip6.0240270530 - 680
3161.4401Hot rolled strip13.5220260530 - 680
3161.4401Hot rolled plate75.0220260520 - 670
316L1.4404Cold rolled strip6.0240270530 - 680
316L1.4404Hot rolled strip13.5220260530 - 680
316L1.4404Hot rolled plate75.0220260520 - 670

Austenitic Grades

GradeEN SpecificationFormMax Thickness (mm)0.2% - Proof Strength (min MPa)a1% - Proof Strength (min MPa)aTensile Strength (MPa)
3041.4301Cold rolled strip6.0230260540 - 750
3041.4301Hot rolled strip13.5210250520 - 720
3041.4301Hot rolled plate75.0210250520 - 720
304L1.4307Cold rolled strip6.0220250520 - 700
304L1.4307Hot rolled strip13.5200240520 - 700
304L1.4307Hot rolled plate75.0200240500 - 700
3161.4401Cold rolled strip6.0240270530 - 680
3161.4401Hot rolled strip13.5220260530 - 680
3161.4401Hot rolled plate75.0220260520 - 670
316L1.4404Cold rolled strip6.0240270530 - 680
316L1.4404Hot rolled strip13.5220260530 - 680
316L1.4404Hot rolled plate75.0220260520 - 670

a - If, in the case of strip in rolling widths < 300 mm, longitudinal test pieces are taken, the minimum values are reduced as follows:
- proof strength - minus 15 MPa,
- elongation for constant gauge length - minus 5 %;
- elongation for proportional gauge length - minus 2 %.
For continuously hot rolled products, 20 MPa higher minimum values of Rp0,2 and 10 MPa higher minimum values of Rp1,0 may be agreed at the time of enquiry and order.

Ferritic Grades

GradeEN SpecificationFormMax Thickness (mm)0.2% - Longitudinal Proof Strength (min MPa)0.2% - transverse Proof Strength (min MPa)Tensile Strength (MPa)
4091.4512Cold rolled strip8.0210220380 - 560
4091.4512Hot rolled strip13.5210220380 - 560
4301.4016Cold rolled strip8.0260280430 - 600
4301.4016Hot rolld strip13.5240260430 - 600
4301.4016Hot rolled plate25.0240260430 - 600
4391.4510Cold rolled strip8.0230240420 - 600
4391.4510Hot rolled strip13.5230240420 - 600
45091.4509Cold rolled strip8.0230250430 - 630

Ferritic Grades

GradeEN SpecificationFormMax Thickness (mm)0.2% - Longitudinal Proof Strength (min MPa)0.2% - transverse Proof Strength (min MPa)Tensile Strength (MPa)
4091.4512Cold rolled strip8.0210220380 - 560
4091.4512Hot rolled strip13.5210220380 - 560
4301.4016Cold rolled strip8.0260280430 - 600
4301.4016Hot rolld strip13.5240260430 - 600
4301.4016Hot rolled plate25.0240260430 - 600
4391.4510Cold rolled strip8.0230240420 - 600
4391.4510Hot rolled strip13.5230240420 - 600
45091.4509Cold rolled strip8.0230250430 - 630

Martensitic Grades

GradeEN SpecificationFormHeat treatment conditionMax Thickness (mm)0.2% - Proof Strength (max MPa)Tensile Strength (max MPa)
4201.4031Cold rolled stripQuenched and tempered3.0--
4201.4031Cold rolled stripAnnealed8.0-760
4201.4031Hot rolled stripAnnealed13.5-760

Martensitic Grades

GradeEN SpecificationFormHeat treatment conditionMax Thickness (mm)0.2% - Proof Strength (max MPa)Tensile Strength (max MPa)
4201.4031Cold rolled stripQuenched and tempered3.0--
4201.4031Cold rolled stripAnnealed8.0-760
4201.4031Hot rolled stripAnnealed13.5-760