T10 steel is composed of simple iron and carbon. Low alloyed high-strength steels incorporate small amounts of other elements (usually < 2% by weight).


So it can provide extra strength.

T10 Steel Worldwide Equivalents

GradeT10STC3/STC41.1645  C105W2SK105/SK9518801407
GradeC9SKU/C100KUF. 515/F. 516W1-91/2/172301Y10Y1105/C105E2UTC105

T10 Steel Chemical Composition


Heat Treatment 


Normalizing temperature 830~850°C. Air-cooled, hardness 255~321HBW.

Ordinary annealing

Annealing temperature 750 ~ 760°C. Keep warm for 2 ~ 4h, and then cool to 500 ~ 600°C at a cooling rate of <30’C/h, and air-cooled.

Isothermal spheroidizing annealing

1) 750~760°C×2~4h. 680~700°C×4~6h. The furnace is cooled again to 5m ~ 600°C, and it is air-cooled. Hardness≤207HBW.

2) 750~770°C ×1~2h, 680~700°C ×2 ~3h, hardness 163~207HBw, pearlite grade 1~5

Features and Application

T10 is the most common carbon tool steel. Moderate toughness, low production cost. After heat treatment, the hardness can reach above 60HRC. But, this steel has low hardenability and poor heat resistance (250°C). It is not easy to overheat during quenching and heating and still maintains fine grains. The toughness is acceptable, and the strength and wear resistance are higher than those of T7-T9. But, the hot hardness is low, the hardenability is still not high, and the quenching deformation is large.

T10 steel is suitable for making various tools. Such as turning knives, planning knives, drills, taps, reaming tools, screw dies, milling cutters, and saw blades. It can also make cold heading dies, punching dies, wire drawing dies, cold extrusion dies for aluminum alloys, paper blanking dies, plastic forming dies, small-sized cold trimming dies and punching dies, low-precision and simple-shaped measuring tools ( such as cardboards.). It can also be used as wear-resistant parts that are not subject to large impacts.

T10 products

Product typeProductsDimensionProcessesDeliver Status
Plates/SheetsPlates/Sheets0.08-200mm(T)*W*LForging, hot rolling, and cold rollingAnnealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel BarRound Bar, Flat Bar, Square BarΦ8-1200mm*LForging, hot rolling and cold rolling, CastBlack, Rough Turning, Shot Blasting,
Coil/StripSteel Coil/Steel Strip0.03-16.0x1200mmCold-Rolled&Hot-RolledAnnealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes/TubesSeamless Pipes/Tubes, Welded Pipes/TubesOD:6-219mm x WT:0.5-20.0mmHot extrusion, Cold Drawn, WeldedAnnealed, Solution and Aging, Q+T, ACID-WASHED