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A3 Application:Alloy tool steel
Category Type Steel grade Standard Country
Grades Special Alloy A3 ASTM USA

Chemical composition % of the ladle analysis of grade A3

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Mo(％) V(%)
1.20～1.30 0.10～0.50 0.40～0.60 ≤0.030 ≤0.030 4.75～5.50 0.90～1.40 0.80～1.40
A3
Mechanical properties of grade A3
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 Condition Brinell hardness (HBW)
526 (≥) 258 (≥) 23 21 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 224
Physical properties of grade A3
Property Density
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
843 (≥) 779 (≥) 41 14 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 313
Temp.
°C/°F		 Creep strain limit
(10000h)
(Rp1,0) N/mm2		 Creep rupture strength
(10000h)
(Rp1,0) N/mm2
379 767 371
A3 Range of products
Product type Products Dimension Processes Deliver Status
Plates / Sheets Plates / Sheets 0.08-200mm(T)*W*L Forging, hot rolling and cold rolling Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Steel Bar Round Bar, Flat Bar, Square Bar Φ8-1200mm*L Forging, hot rolling and cold rolling, Cast Black, Rough Turning, Shot Blasting,
Coil / Strip Steel Coil /Steel Strip 0.03-16.0x1200mm Cold-Rolled & Hot-Rolled Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting
Pipes / Tubes Seamless Pipes/Tubes, Welded Pipes/Tubes OD:6-219mm x WT:0.5-20.0mm Hot extrusion, Cold Drawn, Welded Annealed, Solution and Aging, Q+T, ACID-WASHED
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
RA 330 ASTM USA
Wrought nickel and nickel-related alloys
RA 330 ASTM USA
Special Purpose Alloys ("Superalloys")
RA 330 ASTM USA
Wrought Nickel and Nickel-Related Alloys
RA 333 ASTM USA
Nickel Alloy, Corrosion and Heat Resistant, Sheet, Strip, and Plate 45.5Ni - 25.5Cr - 3.2Co - 3.2Mo - 3.2W - 18.5Fe Solution Heat Treated
RA 333 ASTM USA
Nickel Alloy, Corrosion and Heat-Resistant, Bars, Forgings, and Rings 45.5Ni - 25.5Cr - 3.2Co - 3.2Mo - 3.2W - 18.5Fe Solution Heat Treated
RA 333 ASTM USA
Nickel Alloy, Corrosion and Heat Resistant, Sheet, Strip, and Plate 45.5Ni - 25.5Cr - 3.2Co - 3.2Mo - 3.2W - 18.5Fe Solution Heat Treated
RA 333 ASTM USA
Nickel Alloy, Corrosion and Heat-Resistant, Bars, Forgings, and Rings 45.5Ni - 25.5Cr - 3.2Co - 3.2Mo - 3.2W - 18.5Fe Solution Heat Treated
RA 333 ASTM USA
Special Purpose Alloys ("Superalloys")
RA 333 ASTM USA
Wrought nickel and nickel-related alloys
NA3 ASTM USA
Specification for nickel-copper alloy castings
NA32 ASTM USA
Filler rods and wires for gas-shielded arc weldingSpecification for nickel and nickel alloys
NA34 ASTM USA
Filler rods and wires for gas-shielded arc weldingSpecification for nickel and nickel alloys
NA35 ASTM USA
Filler rods and wires for gas-shielded arc weldingSpecification for nickel and nickel alloys
NA36 ASTM USA
Filler rods and wires for gas-shielded arc weldingSpecification for nickel and nickel alloys
NA37 ASTM USA
Filler rods and wires for gas-shielded arc welding; Nickel and nickel alloys
NA38 ASTM USA
Filler rods and wires for gas-shielded arc welding; Nickel and nickel alloys
NA39 ASTM USA
Filler rods and wires for gas-shielded arc weldingSpecification for nickel and nickel alloys
A3 ASTM USA
Cold-Work Tool Steel
403CB+, H46, B50A365, S40300, B50A365B,403 ASTM USA
STAINLESS STEEL BAR & FORGINGS,CHROMIUM-NIOBIUM-IRON ALLOY

Relevant products

A3 Equivalent Grade Stock

Steel grade Dimension Shape Unit Quantity Delivery state Query
A387 F5 & Grade 5 sheet Coil strip 0.5mmx200mmxC Coil or Strip Tons 3 Cold-Rolled+Annealed Enquiry
A387 F5 & Grade 5 Hot Coil stock Select Tons 3 Hot-Rolled+Annealed+black Enquiry

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