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AISI A9 / T30109 ESR Quality Tool Steel

Product parameters
Material Category:: 5.0Cr-1.5Mo-1.5Ni-1.1V Tool Steel
Material Technical Standards:: ASTM A681 - 2004
Place of Origin: P. R. China
Min. order quantity Per Batch:: 3300 KG
Surface Condition:: Peeled - Rough turned - Shot blasted - Bright surface.
Ultrasonic Test Standard:: ASTM E2375 / MIL-STD- AMS 2154 / SEP 1923 / GB/T 4162 / EN 10228-3 / EN 10308.
Production Lead Time:: Within 75 days after 30% downpayment.
Company ISO Register No:: UQ211218R0
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Description
 
Tool steel is to fabricate the cutting tool, measuring implement, mould, and wear-resisting tool, it possesses higher hardness and keeps maintaining the high hardness and redhardness under high temperature, and more abrasive resistance, proper toughness. Tool steel is commontly divided into carbon tool steel, alloy tool steel, high speed steel.  
Alloy tool steel is one type of steel adds the alloying elements in the carbon tool steel, such as Si, Mn, Ni, Cr, W, Mo, V. Adding the elements (Cr, Mn) can improve the hardenability of tool steel. Or adding other alloying elements meanwhile (the gross is not more than 5%).
 
Alloy tool steel is widely used to produce the cutting tool, cold/heat distortion mould and measuring implement. and further to manufacture the piston, valve, valve seat of fuel pump of engine.

The alloy is usually produced by BEF & AOD followed by electroslag remelting (ESR) / VAR if necessary for special purpose.
Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements. Bars are usually supplied black/bright in the annealed condition.

Chemical Composition (Weight %)
C (%) 0.45 ~ 0.55
Si(%) 0.95 ~ 1.15
Mn(%) ≤ 0.50
P(%) ≤ 0.030
S (%) ≤ 0.030
Cr (%) 4.75~ 5.50
Ni (%) 1.25 ~ 1.75
Mo(%) 1.30 ~ 1.80
Other (%) V 0.80 ~ 1.40
Mechanical Properties
Condition of heat treatment annealing
Tensile Rm (MPa) -
Yield Rp0.2 (MPa) -
Elongation A (%) -
Reduction in cross section on fracture Z (%) -
Impact AKV/AKU (J) -
Brinell Hardness (HBW) 212 ~ 248
 
Shapes and dimensions:
Round bar (Diameter): 5.50 ~ 600mm
Square bar / Flat bar: 10 ~ 620mm
Wire rod (Diameter): 0.50 ~ 13mm
Forging piece: Different shapes based on OEM

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