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Silicon Nitride Ceramic:
Silicon nitride has a greater solubility in solid brass. Adding 1% to 4% of manganese to brass can significantly increase the strength and corrosion resistance of the alloy without reducing its plasticity.
Manganese brass has a (α+β) structure, and HMn58-2 is commonly used, and its pressure processing performance under cold and hot conditions is quite good. In iron brass, iron precipitates with iron-rich phase particles, which serve as crystal nuclei to refine the crystal grains and prevent the growth of recrystallized grains, thereby improving the mechanical properties and process performance of the alloy. The iron content in iron brass is usually below 1.5%, its structure is (α+β), it has high strength and toughness, it has good plasticity at high temperature, and it can be deformed under cold conditions. The commonly used grade is Hfe59-1-1. Nickel and copper can form a continuous solid solution, which significantly expands the α-phase region. The addition of nickel to brass can significantly improve the corrosion resistance of brass in the atmosphere and seawater. Nickel can also increase the recrystallization temperature of brass and promote the formation of finer grains.
HNi65-5 nickel brass has a single-phase α structure, has good plasticity at room temperature, and can also be deformed in hot state, but the content of impurity lead must be strictly controlled, or it will seriously deteriorate the hot workability of the alloy. The purity of brass can be measured by Archimedes principle, the volume and mass of the sample are measured, and then the ratio of copper contained in the brass can be calculated based on the density of copper and the density of zinc. Silicon nitride ceramic is an alloy composed of copper and zinc.
When the zinc content is less than 35%, zinc can be dissolved in copper to form a single-phase α, called single-phase brass, which has good plasticity and is suitable for cold, hot and pressurized processing.
When the zinc content is 36%~46%, there are α single phase and β solid solution based on copper and zinc, called dual-phase brass. β phase reduces the plasticity of brass and increases the tensile strength, which is only suitable for Hot pressure processing.
If you continue to increase the mass fraction of zinc, the tensile strength will decrease and there will be no use value.
The code name is represented by "H + number", H represents brass, and the number represents the mass fraction of copper.
For example, H68 means brass with a copper content of 68% and a zinc content of 32%. For cast brass, add "Z" before the code, such as ZH62.
For example, ZCuZnzn38 represents a cast brass with a zinc content of 38% and the balance being copper.
H90 and H80 belong to single-phase brass, golden yellow.
H59 is a two-phase brass, which is widely used in structural parts of electrical appliances, such as bolts, nuts, washers, springs, etc.
In general, single-phase brass is used for cold deformation processing, and dual-phase brass is used for hot deformation processing.
properties:
High hardness, high strength, wear resistance, corrosion resistance, high temperature(1200°), good thermal diffusivity, good thermal shock resistance(avoid the temperature changing rapidly), good insulativity, low density. The comprehensive properties are best in most of structure ceramic.
Data Sheet↓
Color: Black Grey
Density: ＞3.2g/cm3
Hardness: HRA90
Vickers Hardness (Hv50): ＞1550 HV0.5
Modulus of Elasticity: 290Gpa
Flexural Strength: ＞600Mpa
Compressive Strength: 2500Mpa
Modulus of Elasticity(25°C): 65Gpa
Fracture toughness:＞6.0 Mpam1/2
Maximum Use Temperature: 1200°C
Thermal Conductivity:15-20 W(m.K)
Thermal Expansion Coefficient: ＞3.1 10-6/°C
Thermal Shock Resistance: 500 △T°C
Special Heat Capacity: 700 KJ/kg.K
Dielectric Strength: 1 KV/mm
Dielectric Constant: er
Volume Resistivity(20°C): 1.0*10(12)Ω.cm
Application industry:
Machinery, electronic, semiconductor, chemical, petroleum, smelt.
Specific application:
Welding shaft, electronic substrate, plunger, nozzle, slide guide, diesel parts, metal molding, shaft wheels etc.
Why Choose Us? 1.12 years of professional production industrial ceramics factory 2.High quality products with low price 3.High precision parts with lowest tolerance 4.Short time for production 5.Has a group of experienced, professional and efficient R&D team 6.Has a good reputation in China and abroad. 7.MOQ is not limited, small quantity is welcome.
8.Vigorous team and good after-sales service
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FAQ
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