Description
410 Stainless Steel Bar
Grade 410 is the basic martensitic stainless steel; This grade is written as 1.4006 or X12Cr13 according to EN norm and it is written as UNS S41000 according to UNS norm. AISI 410 (UNS S41000) grade can be heat treatable. Grade 410 is a general purpose grade often supplied in the hardened, but still machinable condition, for applications where high strength and moderate heat and corrosion resistance are required.
Production specification:
Round Bar Dia.: 10 – 900mm
Square Bar Size: 10x10mm – 500x500mm
Length: 1000 – 12000mm
Other trade names: EN 1.4006, X12Cr13, UNS S41000
410 Chemical Composition:
Grade C Si Mn P S Cr
410 0.08-.015
1.00 max. 1.00 max. 0.040 max. 0.030 max. 11.50-13.50
Corrosion Resistance
410 resists dry atmosphere, fresh water, mild alkalies and acids, food, steam, and hot gases. It must be hardened for maximum heat and corrosion resistance. Performance is best with a smooth surface finish. This grade has less corrosion resistance than the austenitic grades and also, less than 17% chromium ferritic alloys such as Grade 430.
Heat Resistance
Good resistance to scaling up to approximately 650°C, but generally not recommended for use in temperatures between 400 and 580°C, because of the reduction in mechanical properties.
Heat Treatment
Full Annealing
815-900°C, slow furnace cool to 600°C, and then air cool.
Process Annealing 650-760°C and air cool.
Hardening
Heat to 925-1010°C, followed by quenching in oil or air. Oil quenching is necessary for heavy sections. Temper, generally within the range of 200-400°C, to obtain a variety of hardness values and mechanical properties as indicated in the accompanying table. The tempering range of 400-580°C should generally be avoided.
Welding
Readily welded by all standard methods, but a pre-heat of 150-260°C and post-weld annealing treatment is required to reduce the possibility of cracking. Use Grade 410 welding rod if post hardening and tempering is involved. If parts are to be used in the “as welded” condition, a ductile joint can be achieved by using Grade 309 filler rods. AS 1554.6 pre-qualifies welding of 410 with Grade 309 rods or electrodes.
Machining
In the annealed or highly tempered conditions, Grade 410 is relatively easily machined, but if hardened to above 30HRC machining becomes more difficult. Free machining Grade 416 (refer to the Atlas Steels Datasheet) is a very readily machined alternative, but with lower corrosion resistance and mechanical properties.
Typical Applications
Bolts, nuts, screws, bushings. Pump and valve parts and shafts. Steam and gas turbine parts. Petroleum fractionating towers. Mine ladder rungs.
Specified Properties
These properties are specified for bar products in ASTM A276. Similar but not necessarily identical properties are specified for other products such as plate, wire, and forgings in their respective specifications.
