Summary of Six Main Grades of Stainless Steel

	303	304	316	416	17-4PH	15-5
Ultimate tensile strength	528 – 639 MPa	480 – 620 MPa	480 – 620 MPa	741 – 1400 MPa	896 – 990 MPa	890 – 1490 MPa
Elongation at break	35 – 55 %	45 – 60 %	30 – 50 %	9 – 20 %	6 – 6.97 %	10 – 16 %
Modulus of elasticity	192 – 200 GPa	191 – 205 GPa	190 – 205 GPa	200 GPa	197 – 207 GPa	190 – 196 GPa
Hardness	81 – 96 HRB	75-83 HRB	75 – 83 HRB	20 – 40 HRC	250 – 260 HV	40 – 46 HRC
Advantages	Great toughness, good machinability	Excellent weldability, good corrosion resistance	High chemical and corrosion resistance	The highest machinability	Excellent corrosion resistance and oxidation	Great transverse properties, strength, and toughness.
Applications	Shafts and spindles, pump and valve parts, nuts and bolts, etc.	Architectural panelling, food handling and precessing equipment, etc.	Chemical and petrochemical industry, wastewater treatment, etc.	Pump & motor shafts, washing machine components, etc.	Oil and petroleum refining equipment, base plates, etc.	Fittings & shafts in aircraft components, equipment for nuclear reactors, etc.