| Steel grade |
Performance characteristics and range of use |
Use examples |
| T7 or T7A |
Good toughness and hardness, but cutting performance is poor, intensity is low. It is applied in making appropriate hardness requirement, can withstand the impact load and have good toughness of all kinds of tools
|
Small size pneumatic tools, WaGong steamed bread with saw, son, and carpenter chisel, fitter tools, punch, hammer, iron scissors, etc.; Simple shape, load bearing light small cold mould, molding, rivets thermosetting plastic mould and modulus of compressibility, etc |
| T8 or T8A |
When quench heating to overheat, deformation is big also, plastic and lower strength, high hardness and resistance to heat treatment after touch sex; Suitable for production to demand higher hardness, wear resistance, bear impact load and have good toughness of all kinds of tools |
The wood cutter, processing in drilling, drilling, axes, crew-cut success chisel, article to cut, the punch, the grip, file, turning and teeth; Cold heading head, stretching mode, stamping mould, paper feeding mold, thermosetting plastic modulus of compressibility, etc |
| T8Mn或T8MnA |
Performance and T8, T8A close, but raised its quench-hardening ability, workpiece can get deep hardened layer; Suitable for the production of larger tools section |
Can make T8, T8A tools, still can make horizontal grain file, coal and rock article to cut, chisel, etc |
| T9 or T9A |
Has the high hardness and resistance to wear, performance and T8, T8A near; Suitable for high hardness and requirements of making a certain toughness tools |
Woodworking tools, the saw, file, taps, BanYa, agricultural machinery such as cutting blades; Cold die, punching the punch, etc |
| T10 or T10A |
In quench heating (700 ~ 800 ℃), can still keep fine grain organization, from overheating. Hardened steel not dissolve in excess of carbon, increase the wear resistance of the steel; Suitable for high wear resistance requirements of making the sharp blade, and slightly toughness tools
|
Wood processing tools, hand with horizontal saw and the joiner saw, machine with fine wood tools, manual twist drill, turning, planer knives, mills, reamer BanYa, taps, scraper, file groove tools, etc.; Cold heading die, die, plastic molding, etc |
| T11 or T11A |
In T10, compared to T12, and has a good comprehensive mechanical properties, such as hardness, wear resistance and toughness. Crystal force to grow up and form carbide nets to the sensitivity of the small; Suitable for cutting requirements of making the mouth won't get hot when toughness of tools |
Taps, file, reaming cutter, BanYa, scraper, gauge, woodworking tools; Cold heading model, the cold die size is not big, soft materials in trimming mould and so on |
| T12 or T12A |
The carbon steel and high content of the excess carbon hardening more things, for hardness &abrasion resistance are high, and toughness is low; Suitable for making from impact load, cutting speed is not high, the cutting tool of hot mouth the same toughness |
Turning, milling cutter, scraper drill hole drilling, reamer, requirements, taps, BanYa, gauge, cut tobacco knife, file, etc.; Cold heading mold, drawing to touch, small section cold die and mould, plastic molding machine, etc |
| T13 or T13A |
Carbon steel carbon content in the highest of steel, high rigidity, carbide increase and uneven distribution, mechanical performance is poor; Suitable for making not withstand impact load hard metal cutting tools |
Scraper, file, the razor wire cutting tools, tools, groove tools and hard stone processing tools etc
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