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Audited Supplier |
chemical composition%
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Brand
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FeNb70
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FeNb60-A
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FeNb60-B
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FeNb50-A
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FeNb50-B
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Nb+Ta
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70-80
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60-70
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60-70
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50-60
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50-60
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Ta
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0.8
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0.5
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0.8
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0.8
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1.5
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Al
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3.8
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2.0
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2.0
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2.0
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2.0
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Si
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1.5
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0.4
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1.0
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1.2
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4.0
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C
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0.04
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0.04
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0.05
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0.05
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0.05
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S
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0.03
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0.02
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0.03
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0.03
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0.03
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P
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0.04
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0.02
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0.05
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0.05
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0.05
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W
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0.3
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0.2
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0.3
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0.3
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-
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Ti
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0.3
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0.2
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0.3
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0.3
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-
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Cu
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0.3
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0.3
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0.3
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0.3
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-
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Mn
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0.3
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0.3
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0.3
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0.3
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-
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As
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0.005
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0.005
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0.005
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0.005
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-
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Sn
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0.002
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0.002
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0.002
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0.002
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-
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Sb
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0.002
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0.002
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0.002
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0.002
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-
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Pb
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0.002
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0.002
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0.002
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0.002
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-
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Bi
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0.002
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0.002
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0.002
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0.002
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-
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A ferroalloy having niobium and iron as its principal components. It also contains aluminum, silicon, carbon, sulfur, phosphorus and other impurities. According to the niobium content of the alloy is divided into FeNb50, FeNb60, FeNb70.
Iron niobium is mainly used in the smelting of high temperature (heat resisting) alloys, stainless steels and high strength low alloy steels. Niobium In stainless steel and heat resistant steels, stable niobium carbide is formed with the carbon in the steel. It is uniformly distributed in the grain boundary of steel to prevent the grain growth of steel under high temperature, and play a role in refining the structure of steel, which can improve the strength, toughness and creep properties of steel. The chemical affinity of niobium and carbon is much greater than that of chromium and carbon. Therefore, the presence of niobium in stainless steel can prevent the precipitation of chromium carbide at the grain boundary of the steel, thus improving the corrosion resistance of the steel. The niobium and nitrogen in steel produce stable niobium nitride, which improves the corrosion resistance of steel surface. The niobium and oxygen in the steel form stable niobium oxide, which makes the surface of the steel form niobium oxide film, which can prevent the diffusion of oxygen to the inside and play an anti-oxidation role. The addition of Nb0.015% ~ 0.05% in carbon steel can refine the structure and make the steel have good formability and weldability. Nb has a strong effect on the austenite recrystallization of steel, so that the steel can effectively control the rolling at higher temperature, and the effect of strengthening and toughening is very remarkable. Therefore, the amount of niobium as a microalloying element in carbon steel is greatly increased.
Q1: How are the products' quality?
A2: The products will be strictly inspected before shipment, so the quality could be guaranteed.
Q2: How to guarantee the quality?
A3: Our factory lab can supply the quality report ,and we can arrange third party inspection when cargo arriving loading port .
Q3: Can you supply the special size and packing?
A4:Yes, we can supply the size according to buyers'request.
Q4: What's the MOQ of trial order?
A5: No limit,We can offer the best suggestions and solutions according to your condition.
Q5: How long is delivery time?
A6: The delivery time will be determined according to the quantity of the order.
Q6: What are the payment terms?
A7: Usually T/T.
Q7: Do you provide samples?
A8: Yes, samples are available.
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