UNS N08020 ASTM B473 ASTM B463 alloy 20 steel sheet
L605, also known as HAYNES25 is a cobalt-based alloy, with good formability and excellent high temperature performance in high temperature and high strength environment, the material can be anti-oxidation, carbonation, easy to crack.
Chemical component %
|
C
|
Fe
|
Ni
|
Si
|
P
|
S
|
Mn
|
|
≤0.3
|
2.5
|
63.0~70.0
|
≤0.5
|
≤0.024
|
≤0.024
|
≤2.00
|
Mechanical /Physical properties
Tensile strength σb (MPa): ≥560
Yield point σ0.2 (MPa):≥205
percentage reduction of area ψ (%):≥50
Elongationδ5 (%):≥40
Hardness: ≤201HRB
Grain size: by JIS G4511-2007
|
Grade
|
C %
|
Si %
|
Mn %
|
P %
|
S %
|
Cr %
|
Mo
%
|
Ni
%
|
Other
|
|
201
|
≤0.15
|
≤1.00
|
5.5-7.5
|
≤0.06
|
≤0.03
|
16-18
|
-
|
3.5-5.5
|
N≤0.25
|
|
202
|
≤0.15
|
≤1.00
|
7.5-10.0
|
≤0.06
|
≤0.03
|
17-19
|
-
|
4.0-6.0
|
N≤0.25
|
|
301
|
≤0.15
|
≤1.00
|
≤2.00
|
≤0.045
|
≤0.03
|
16-18
|
-
|
6.0-8.0
|
-
|
|
302
|
≤0.15
|
≤1.00
|
≤2.00
|
≤0.045
|
≤0.03
|
17-19
|
-
|
8-10.0
|
-
|
|
303
|
≤0.15
|
≤1.00
|
≤2.00
|
≤0.2
|
≥0.015
|
17-19
|
≤0.6
|
8.0-10.0
|
-
|
|
304
|
≤0.08
|
≤1.00
|
≤2.00
|
≤0.045
|
≤0.03
|
18-20
|
-
|
8-10.5
|
-
|
|
304L
|
≤0.03
|
≤1.00
|
≤2.00
|
≤0.045
|
≤0.03
|
18-20
|
-
|
9-13
|
-
|
|
309S
|
≤0.08
|
≤1.00
|
≤2.00
|
≤0.045
|
≤0.03
|
22-24
|
-
|
12-15
|
-
|
|
310S
|
≤0.08
|
≤1.5
|
≤2.00
|
≤0.045
|
≤0.03
|
24-26
|
-
|
19-22
|
-
|
|
316
|
≤0.08
|
≤1.00
|
≤2.00
|
≤0.045
|
≤0.03
|
16-18
|
2-3
|
10-14
|
-
|
|
316L
|
≤0.03
|
≤1.00
|
≤2.00
|
≤0.045
|
≤0.03
|
16-18
|
2-3
|
12-15
|
-
|
|
317
|
≤0.08
|
≤1.00
|
≤2.00
|
≤0.045
|
≤0.03
|
18-20
|
3-4
|
11-15
|
-
|
|
321
|
≤0.08
|
≤1.00
|
≤2.00
|
≤0.045
|
≤0.03
|
17-19
|
-
|
9-13
|
Ti≥5×C
|
|
430
|
≤0.12
|
≤0.75
|
≤1.00
|
≤0.04
|
≤0.03
|
16-18
|
-
|
≤0.6
|
|
Processing performance
Machine plus
Conventional process can be processed L605, recommended the use of cobalt-containing high-speed steel or alloy steel tool. Compared to austenitic stainless steel (such as 304,321,347 stainless steel), L605 processing difficult. Very high cold hardening rate and the production process to produce a lot of heat makes processing difficult, it is recommended to use a small amount of feed and low speed.
welding
Available shielded metal arc welding, tungsten gas welding, metal pole gas welding to welding L605. Submerged arc welding is not recommended.
Weld clean the surface before welding, erase all stains and dry the surface.
Application
L605 is also used in the manufacture of jet engine components, including engine blades, combustion chamber, reburning device, turbine ring. L605 is also used for industrial furnaces, including high temperature furnace key parts of the flame device and lining.
Corrosion resistance
The L605 exhibits excellent resistance to high temperature corrosion gases in jet engine applications. 1600 ° F intermittent work and 2000 ° continuous oxidation resistance is also very good. In the heating process, L605 highly resistant to oxidation, does not appear The material is peeled off, while the material is resistant to a variety of chemical oxidants, especially resistant to a certain concentration and temperature of hydrochloric acid and nitric acid. Salt spray corrosion tolerance is very good.
Company Information:
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