Powder metallurgy is a process for making metals or using metal powders (or a mixture of metal powders and non-metal powders) as raw materials, forming and sintering, and manufacturing metal materials, composite materials and various types of products.

Product name	blackening or black coating metallurgy machinery parts
Material	Fe, Cu, FeCu alloy, stainliee steel, graphite
Style	Sleeve, Flanged,Spherical,Miniature,Trust Washer, Rod
Size	1) inner 3-70mm, also can according to your request

Specification: Standard tolerance of inside diameter G7 Standard tolerance of outside diameter S7 Recommend shaft tolerance f7/g6 Recommend housing tolerance H7 Physical properities: Specific load capacity static: 10 N/mm² Specific load capacity dynamic: 5 N/mm² Sliding speed: 6.0 [ m/s ] Friction value: 0,05 to 0,20 [ µ ] Temperature strain: -40 to +200 [ °C ] Max. Pv - value: 1.6 [ N/mm² x m/s ] Bronze Bushing Hardness: HB 30-145 Surface Roughness:0.8-1.6 Yield Stength: 15,000 PSI Elongation: 1% " K" Strength Constent(PSI): 26,500 Oil Centent: 18-22% (V) Density: 6.4-7.3 g/cm³ Features: 1. Exquisite and shiny appearance, beautiful and elegant 2. The product is durable and will not age or rust 3. Has a good fixing effect