choose right steel will direct influence mold uselife and production efficiency

choose right steel will direct influence mold uselife and production efficiency

Sep 14, 2018

Aboutt the metals, on normal seperate Non-ferrous metals and ferrous metals

Ferrous Metals

Material nameCompositionPropertiesApplications
Low Carbon SteelsUp to 0.30% CarbonGood formability, good weld-ability, low cost0.1%-0.2% carbon: Chains, stampings, rivets, nails, wire, pipe, and where very soft, plastic steel is needed. 

0.2%-0.3% carbon: Machine and structural parts
Medium Carbon Steels0.30% to 0.80% CarbonA good balance of properties, fair formability0.3%-0.4% carbon: Lead screws, gears, worms, spindles, shafts, and machine parts. 

0.4%-0.5% carbon: Crankshafts, gears, axles, mandrels, tool shanks, and heat-treated machine parts 

0.6%-0.8% carbon: "Low carbon tool steel" and is used where shock strength is wanted. Drop hammer dies, set screws, screwdrivers, and arbors. 

0.7%-0.8% carbon: Tough and hard steel. Anvil faces, band saws, hammers, wrenches, and cable wire.
High Carbon Steels0.80% to ~2.0% CarbonLow toughness, formability, and weld-ability, high hardness and wear resistance, fair formability0.8%-0.9% carbon: Punches for metal, rock drills, shear blades, cold chisels, rivet sets, and many hand tools. 

0.9%-1.0% carbon: Used for hardness and high tensile strength, springs, cutting tools 

1.0%-1.2% carbon: Drills, taps, milling cutters, knives, cold cutting dies, wood working tools. 

1.2%-1.3% carbon: Files, reamers, knives, tools for cutting wood and brass. 

1.3%-1.4% carbon: Used where a keen cutting edge is necessary (razors, saws, etc.) and where wear resistance is important.
Stainless SteelStainless steel is a family of corrosion resistant steels. They contain at least 10.5% chromium, with or without other elements. The Chromium in the alloy forms a self-healing protective clear oxide layer. This oxide layer gives stainless steels their corrosion resistance.Good corrosion resistance, appearance, and mechanical properties
Austenitic Steels: Contains chromium and nickel. The typical chromium content is in the range of 16% to 26%; nickel content is commonly less than 35%.Good mechanical and corrosion resisting properties, high hardness and yield strength as well as excellent ductility and are usually non-magneticKitchen sinks, architectural applications such as roofing, cladding, gutters, doors and windows; Food processing equipment; Heat exchangers; Ovens; Chemical tanks
Ferritic Steels: Magnetic with a high chromium and low nickel content usually alloyed with other elements such as aluminum or titanium.Good ductility, weld-ability, and formability; reasonable thermal conductivity, and corrosion resistance with a good bright surface appearanceAutomotive trim, catalytic converters, radiator caps, fuel lines, cooking utensils, architectural and domestic appliance trim applications
Martensitic Steels: Typically contains 11.0% to 17.0% chromium, no nickel, and 0.10% to 0.65% carbon levels. The high carbon enables the material to be hardened by heating to a high temperature, followed by rapid cooling (quenching).Good combination of corrosion resistance and excellent mechanical properties, produced by heat treatment, to develop maximum hardness, strength, and resistance to abrasion and erosion.

Cutlery, scissors, surgical instruments, 

wear plates, garbage disposal shredder lugs, industrial knives, vanes for steam turbines, fasteners, shafts, and springs

Non-Ferrous Metals

Material nameCompositionPropertiesApplications
Aluminum / Aluminum alloysPure metal / Easily alloyed with small amounts of copper, manganese, silicone, magnesium, and other elementsLow density, good electrical conductivity (approx. 60% of copper), nonmagnetic, noncombustible, ductile, malleable, corrosion resistance; easily formed, machined, or castWindow frames, aircraft parts, automotive parts, kitchenware
BrassAlloy of copper and zinc, 65% to 35% is the common ratioReasonable hardness; casts, forms, and machines well; good electrical conductivity and acoustic propertiesParts for electrical fittings, valves, forgings, ornaments, musical instruments
CopperPure metalExcellent ductility, thermal and electrical conductivityElectrical wiring, tubing, kettles, bowls, pipes, printed circuit boards
LeadPure metalHeaviest common metal, ductile, and malleable, good corrosion resistancePipes, batteries, roofing, protection against X-Rays
Magnesium / Magnesium AlloysPure metal / Used as an alloy element for aluminum, lead, zinc, and other nonferrous alloys; alloyed with aluminum to improve the mechanical, fabrication, and welding characteristicsLightest metallic material (density of about 2/3 of that of aluminum), strong and tough, most machinable metal, good corrosion resistance, easily castAutomobile, portable electronics, appliances, power tools, sporting goods parts, and aerospace equipment
Nickel / Nickel AlloysPure metal / Alloys very well with large amounts of other elements, chiefly chromium, molybdenum, and tungstenVery good corrosion resistance (can be alloyed to extend beyond stainless steels), good high temperature and mechanical performance, fairly good conductor of heat and electricityThe major use of nickel is in the preparation of alloys or plating - frequently used as an undercoat in decorative chromium plating and to improve corrosion resistance; applications include electronic lead wires, battery components, heat exchangers in corrosive environments
Titanium / Titanium AlloysPure metal / Easily alloys with aluminum, nickel, chromium, and other elementsLow density, low coefficient of thermal expansion, high melting point, excellent corrosion resistance, nontoxic and generally biologically compatible with human tissues and bones, high strength, stiffness, good toughnessAerospace structures and other high-performance applications, chemical and petrochemical applications, marine environments, and biomaterial applications
Zinc / Zinc AlloysPure metal/ Metal is employed to form numerous alloys with other metals. Alloys of primarily zinc with small amounts of copper, aluminum, and magnesium are useful in die-casting. The most widely used alloy of zinc is brassExcellent corrosion resistance, light weight, reasonable conductor of electricityUsed principally for galvanizing iron (more than 50% of metallic zinc goes into galvanizing steel), numerous automotive applications because of its light weight