ASTM 410 Stainless Steel Round Bars By yaang.com

DataTime:[2015-1-9]

410 Stainless Steel is a basic straight chromium high hardenability martensitic stainless steel with good strength and fairly good corrosion resistance as generally supplied hardened and tempered in the tensile range 700 - 850 Mpa (condition R) Brinell range 201 - 255. Characterised by good corrosion resistance in mild atmospheric industrial and domestic environments coupled with good strength and excellent toughness in the hardened and tempered condition.

410 Stainless Steel due to its excellent hardenability is capable of being through hardened to over Rc40 depending upon carbon content and section size. Small sections can be air cooled and larger sections oil quenched for maximum through hardness.Pre hardened and tempered 410 Stainless Steel will also respond readily to nitriding achieving a typical surface hardness of over Rc65. The nitriding process however reduces the corrosion resistance and is therefore not generally recommended except for critical applications where the benefit outweighs all other considerations.

ASTM 410 Stainless Steel Round Bars are used for parts requiring a combination of good strength and toughness, plus reasonable corrosion resistance. Typical applications are: Bolts, Bushings, Fasteners, Gas Turbine Parts, Mine Equipment, Pump Parts, Petrochemical Equipment, Steam Turbine Parts, Studs, Valve Parts etc.

Material magnetic in all conditions.

Specifications
Australia	AS 2837-1986 410
Germany	W.Nr 1.4006 X10Cr13
Great Britain	BS970 Part3 1991 410S21 BS970 1955 EN56A
Japan	JIS G4303 SuS 410
USA	ASTM A276-98b 410 SAE 51410 AISI 410 UNS S41000

Chemical Composition Of ASTM 410 Stainless Steel Round Bars
	Min. %	Max %
Carbon	0.09	0.15
Silicon	0	1.00
Manganese	0	1.00
*Nickel	0	1.00
Chromium	11.50	13.50
Phosphorous	0	0.04
Sulphur	0	0.03
*Nickel additional option
Mechanical Property Requirements For Material in the Annealed and Heat Treated - Condition R To AS2837 - 1986 410 and BS970 Part3 1991 410S21
Condition Annealed			*R
Tensile Strength Mpa	Min		700
	Max		850
0.2% Yield Strength Mpa	Min		495
Elongation on 5.65√S0 %	Min		15
Impact Izod J	Min		34
Hardness HB	Min		201
	Max	207	255
*Material stocked generally in condition R. NB. Check the mill certificate if critical for end use.
*Typical Mechanical Properties At Room Temperature - Hardened and Tempered to Condition R**
Tensile Strength Mpa					760
Yield Strength Mpa					595
Elongation on 5.65√S0 %					23
Impact Charpy J J					53	90
Hardness	HB				230
	Rc				22
*Typical Hardening Temperatures			950^oC - 1010^oC
*Typical Tempering Temperatures			650^oC - 680^oC
			620^oC - 660^oC
Typical Mechanical Properties At Room Temperature - Hardened By Oil Quench at 1010^oC and Tempered as Indicated
Temperature^oC			250	370	480	540	590	650
Tensile Strengt Mpa			1350	1295	1300	690	830	730
0.2% Yield Strength Mpa			1095	1070	1020	915	725	630
Elongation in 50mm %			17	17	18	19	20	21
Impact Charpy J			76	66	*38	*33	52	95
Hardness		HB	400	400	400	285	248	223
		Rc	43	43	43	30	24	20
High tensile strength and high yield strength plus fairly good impact properties obtained when tempered below 400^oC. *Note drop in impact properties. Tempering within the range 400^oC - 580^oC should be avoided.
Elevated Temperature Properties
410 displays good resistance to scaling in continuous service up to 650^oC. Its use however at these higher working Temperatures results in a substantial drop in tensile strength and hardness with subsequent increase in ductility.
Typical Mechanical Properties at Elevated Temperatures, Hardened at 1010^oC and Tempered at 30^oC Above Working Temperature
Tempering Temperature ^oC			510	570	620	680
Working Temperature ^oC			480	540	590	650
Tensile Strength Mpa			1200	540	350	220
Yield Strength Mpa			965	510	320	190
Elongation in 50mm %			15	24	30	39
Room Temperature Hardness After Test		HB	390	285	240	220
		Rc	43	31	24	19
NB. Creep and stress rupture strength is also substantially reduced at these higher working temperatures.
Low Temperature Properties
410 Stainless Steel is not recommended for use at sub-zero temperatures due to a substantial drop in impact properties consistent with most steels other than the austenitic steel types.
Cold Bending
In the hardened and tempered as supplied condition, it will be more difficult due to the high yield strength which must be taken into account.
Hot Bending
In the hardened and tempered as supplied condition, it is not recommended due to its affect on the mechanical properties within the heat affected zone.
Corrosion Resistance
410 Stainless Steel has better corrosion resistance than 416 grade, but lower than 431 grade. Also lower than most of the 400 series ferritic stainless steels, and all of the 300 series austenitic stainless steels.NB. It has optimum corrosion resistance in the hardened and tempered condition and is not therefore recommended for use in the annealed condition. It is most important that oxygen is always allowed to circulate freely on all stainless steel surfaces to ensure that a chrome oxide film is always present to protect it. If this is not the case, rusting will occur as with other types of non stainless steels.For optimum corrosion resistance surfaces must be free of scale and foreign particles. Finished parts should be passivated. Source: Yaang Pipe Industry Co., Limited (www.yaang.com)

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