SAE 4340 | AISI 4340
SAE 4340 Round Bar Supplier | AISI 4340 Forged Round Bars | SAE 4340 Alloy Steel Round Bars | SAE 4340 Case Hardening Steel | SAE 4340 Bright Bars
The SAE 4340 material properties are high tensile strength and high hardness. SAE 4340 equivalent grade is AISI 4340. AISI 4340 material comes under alloy steel of grades of steel. SAE 4340 has good machinability and hence it is used to make nuts, bolts, gears, shafts, crankshafts, etc. Buy AISI 4340 online from National Steel Industries.
National Steel Industries provides AISI 4340 round bars, forged bars, bright bars and other sizes of premium quality. Ready stock material of SAE 4340 in sizes 20mm to 190mm dia. Round bar supplier of AISI 4340 for over two decades. We are one of the most trusted manufacturer and exporter of SAE 4340 grade steel Bars.​
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National Steel Industries is the most prominent supplier of SAE 4340 steel. Buy good quality SAE 4340 round bars and SAE 4340 flat bars from us which are tested for a variety of parameters and delivered with a material test certificate for complete quality assurance. National Steel Industries exports high quality round bars to 6 continents.
SAE 4340 Chemical Composition
AISI 4340 carbon content is from 0.38-0.43 %. The material contains ​P and S as 0.035 % and 0.040 % max. The metal contains high manganese, chromium, and nickel which contributes to the high hardness of the material. Due to high Nickel content, the material can undergo heat treatments at high temperatures.
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Chemical Composition of AISI 4340
Element %Composition
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C%: 0.38/0.43
Mn%: 0.60/0.80
P %: 0.035 max
S %: 0.040 max
Si%: 0.20/0.35
Ni%: 1.65/2.00
Cr%: 0.70/0.90
Mo%: 0.20/0.30
SAE 4340 Mechanical Properties
AISI 4340 mechanical properties are high tensile strength and high hardness. ​Annealing can increase the material's tensile strength. SAE 4340 has corrosion resistance property due to nickel content.
Property Value
Tensile Strength 850-1000 N/mm²
Hardness 250-350 HB
Elongation 13%
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SAE 4340 Heat Treatments
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Forging or hot rolling
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Normalizing
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Soft annealing
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Core hardening
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Intermediate annealing
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Case hardening
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Tempering
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Carburising
National Steel Industries is one of the biggest suppliers, exporters, and stockists of AISI 4340 material.
Buy SAE 4340 at the best price from us which is tested for a variety of parameters and delivered with a material test certificate for complete quality assurance.
AISI 4340 | SAE 4340 PRODUCTS
Round Bars Size
Product Name
SAE 4340 Hot Rolled Round Bars
SAE 4340 Cold Rolled and Cold Drawn Round bars
SAE 4340 Peeled Round Bars
SAE 4340 Ground Round Bars
SAE 4340 Polished Round Bars
SAE 4340 Turned Round Bars
SAE 4340 Forged Bars
SAE 4340 Proof Machine Bars
Size
16mm dia to 250mm dia
3mm dia to 100mm dia
3mm dia to 65mm dia
3mm dia to 65mm dia
3mm dia to 65mm dia
10mm dia to 1200mm dia
30mm dia to 1500mm dia
30mm dia to 1500mm dia
Square Bars Size
Product Name
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SAE 4340 Hot Rolled Square Bars
SAE 4340 Cold Drawn Square Bars
SAE 4340 Peeled Square Bars
SAE 4340 Ground Square Bars
SAE 4340 Polished Square Bars
SAE 4340 Forged Square Bars
SAE 4340 Proof Machine Bars
Size
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10mm Square to 200mm Square
10mm Square to 80mm Square
5mm Square to 80mm Square
5mm Square to 80mm Square
5mm Square to 50mm Square
30mm Square to 1500mm Square
30mm Square to 1500mm Square
AISI 4340 | SAE 4340 APPLICATIONS
SAE 4340 material is used to make shafts, crankshafts, rollers, axles, gears, bolts, nuts, gun barrels, missile components, ordnance, etc. It has high tensile strength and high hardness. AISI 4340 is easily machinable and hence it is used to make machine parts. SAE 4340 is used in industries such as the Railway industry, automobile industry, aircraft industry, iron, and steel industry, civil industry, etc. AISI 4340 can be applied with Heat Treatments such as normalization, quenching, annealing, etc.
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National Steel Industries is one of the biggest suppliers, exporters, and stockists of AISI 4340 | SAE 4340 material at the best price.
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We are the leading supplier of SAE 4340 round bar supplier in
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USA
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Qatar
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AISI 4340 | SAE 4340 PRODUCTS
AISI 4340 | SAE 4340 ROUND BARS | AISI 4340 | SAE 4340 PIPES | AISI 4340 | SAE 4340 TUBES | AISI 4340 | SAE 4340 FORGED ROUND BARS | AISI 4340 | SAE 4340 SHEETS | AISI 4340 | SAE 4340 PLATES | AISI 4340 | SAE 4340 RODS | AISI 4340 | SAE 4340 SQUARE BARS | AISI 4340 | SAE 4340 FLAT BARS | AISI 4340 | SAE 4340 I BEAM | AISI 4340 | SAE 4340 ANGLE | AISI 4340 | SAE 4340 CHANNEL | AISI 4340 | SAE 4340 FLANGES
National Steel Industries provides the best price and best quality for AISI 4340 | SAE 4340 round bars.