Martensitic stainless steel with high Mn content
A martensitic stainless steel, content technology, applied in high hardness and high corrosion resistance martensitic stainless steel, high strength field, can solve the problems of increasing production cost, increasing the difficulty of manufacturing, etc., to achieve corrosion resistance will not decrease, Good toughness and low production cost
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Embodiment 1
[0032] Table 1 Similar Patent Steel Composition Control Comparison (Wt%)
[0033] Patent No
C
Si
mn
P
S
Cr
Ni
Mo
Cu
Ti
Nb
CN1697889
0.03-0.1
≤0.5
1-2.5
-
-
10-15
-
-
-
0.01-0.5
0.01-1.0
Wo2007029626
0.05-0.1
0.1-1.0
0.2-2
≤0.04
≤0.01
11-14
0.5-2
1-2
0.5-2
≤0.1
0.03-0.3
this invention
0.03-0.1
0.2-0.8
1.2-3.0
≤0.03
≤0.02
12-14
[0034] Patent No
V
Zr
Al
Ta
Hf
N
CN1697889
0.01-0.5
0.01-1.0
-
≤0.5
≤0.5
0.005-(Ti+V)×14 / 50+(Nb+Zr)×14 / 90
Wo2007029626
-
-
≤0.1
0.01-0.025
this invention
0.008-0.03
[0035] Among them, the 13Cr martensitic stainless ste...
Embodiment 2
[0040] According to the chemical composition range designed by the present invention, 5 furnaces of steel were smelted on the vacuum induction furnace, which we named as No. 1 furnace, No. 2 furnace, No. 3 furnace, No. 4 furnace, and No. 5 furnace respectively. The chemical composition is shown in Table 2.
[0041] All the 5 furnaces of molten steel were poured into small steel ingots, and the steel ingots were sand-cooled with molds, and demoulded after cooling to room temperature. After demoulding, the surface of the ingot is ground and forged, and finally heated to 1200°C and hot-rolled into a plate. Sample processing is carried out on the plate according to the requirements of the national standard. The steel was annealed at 760°C and quenched at 1000°C respectively, and its strength, hardness, plasticity and corrosion resistance were tested. The corrosion resistance test adopts the salt spray corrosion method, and the corrosion period is 120 hours. The test results are ...
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