Home»Grades > Special Alloy > T4
T4Application:Tungsten series High-Speed Tool Steel
CategoryTypeSteel gradeStandardCountry
Grades Special Alloy T4ASTMUSA

Chemical composition%of the ladle analysis of gradeT4

C(%)Si(%)Mn(%)P(%)S(%)Cr(%)Mo(%)V(%)W(%)Co(%)
0.70~0.800.20~0.400.10~0.40≤0.030≤0.0303.75~4.500.40~1.000.80~1.2017.5~19.04.25~5.75
T4
Mechanical properties of gradeT4
Proof strength
Rp0.2(MPa)
Tensile strength
Rm(MPa)
Impact energy
KV(J)
Elongation at fracture
A(%)
Reduction in cross section on fracture
Z(%)
As-Heat-Treated ConditionBrinell hardness(HBW)
626(≥)825(≥)134133Solution and Aging,Annealing,Ausaging,Q+T,etc313
Physical properties of gradeT4
PropertyDensity
kg/dm3
Temperature T
°C/F
Specific heat
J/kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
328(≥)575(≥)312442Solution and Aging,Annealing,Ausaging,Q+T,etc244
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0)N/mm2
Creep rupture strength
(10000h)
(Rp1,0)N/mm2
126721685
T4Range of 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
Cross Reference Table(Equivalent Grade)
GradeStandardCountryApplication
A 268 S44300ASTMUSA
Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
S44300ASTMUSA
Ferritic Chromium Copper Heat Resisting Steel
SA-1008 BHS Grade 44[300]ASTMUSA
Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy and High-Strength Low-Alloy With Improved Formability
SA-1008 SHS Grade 44[300]ASTMUSA
Specification for Steel, Sheet, Cold-Rolled, Carbon, Structural, High-Strength Low-Alloy and High-Strength Low-Alloy With Improved Formability
SA-268 S44300ASTMUSA
Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
T41901ASTMUSA
Shock-Resisting Tool Steel
T41902ASTMUSA
Shock-Resisting Tool Steel
T41904ASTMUSA
Shock-Resisting Tool Steel
T41905ASTMUSA
Shock-Resisting Tool Steel
T41906ASTMUSA
Shock-Resisting Tool Steel
T41907ASTMUSA
Shock-Resisting Tool Steel
T4ASTMUSA
High-Speed Tool Steel
Stellite T40ASTMUSA
Stellite alloy

Relevant products

T4 Steel Stock

Steel gradeDimensionShapeUnitQuantityDelivery stateQuery
T45Cr5Si3 Round BarDia.40mmRound BarKgs500Hot-Rolled+Annealed+blackEnquiry
1.2714 Hot-Work Mould Steel Flat Bar Stock(2019-09-03)Select0SelectEnquiry
1.2714 Stock list 2020-06-15Select0SelectEnquiry
1.2714 QT Bar Stock List 2020-06-15Select0SelectEnquiry

Enquiry