Applications Roller bearings with thickness up to 50 mm.
Description Medium alloy, oil-hardening tooling steel, which is hard-wearing.
Quality Standard:
DIN 17230-1980 Ball and Roller Bearing Steels
Chemical Composition(%)
C
Si
Mn
P
S
Cr
Ni
Cu
0.90-1.05
0.50-0.70
1.00-1.20
0.030 max
0.025 max
1.40-1.65
0.30 max
0.30 max
HEAT TREATMENT:
Soft Annealing Heat to 760-800oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 217.
Normalizing Normalizing temperature: 860-900oC.
Stress Relieving Stress relieving to remove machining stresses should be carried out by heating to approx. 650oC, holding for 1-2 hours at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.
Hardening Harden from a temperature of 830-890oC followed by oil quenching. Hardness after quenching is approx. 64 HRC.
Application: 4140 Alloy Steel/SAE 4140 Steel Price is use to producecomponents with high requirements on toughness, e.g. gear wheels, pinions, connecting rods, parts for mechanical engineering .
Chemical Composition
C
Si
Mn
Cr
Mo
P
S
0.38-0.43
0.40max
0.60-0.90
0.90-1.20
0.15-0.30
≤0.035
≤0.035
how high tensile steel is made Heat treatment
Forging
Heat to 1150°C. Hold until uniform. Minimum forging temperature 850°C.Cool slowly in ashes or sand etc.
Annealing
Heat to 830°C-850°C.Cool in furnace.
Normalising
Heat to 870°C-900°C.Cool in still air.
Stress Relieving
Annealed: Heat to 600°C-650°C.Hardened: Heat to 500°C-550°C.Cool in still air.
Hardening
Heat to 830°C-880°C. Quench in oil or polymer.
Tempering
Heat to 450°C-700°C cool in still air. NB. Tempering within the range 200°C-420°C will result in temper brittleness and should be avoided.
Yeguang steel Metal is a distributor of 4140 grade cold drawn steel bar. 4140 bars have high hardenability, and the molybdenum content provides high strength and uniformity of hardness. Unlike other grades, the carbon content of 4140 grade steel allows it to hold up well to heat treatment, while having good wear resistance and strength.
4140 Mechanical Properties (Annealed)
Tensile Strength
95,000 psi
Yield Strength
60,500 psi
Elongation in 2″
25.7%
Reduction of Area
55.9%
Brinelle Hardness
197
4140 Mechanical Properties (Normalized)
Tensile Strength
148,000 psi
Yield Strength
95,000 psi
Elongation in 2″
17.7%
Reduction of Area
46.8%
Brinelle Hardness
302
Chemcial Compositions(%):
Quality Standard
Steel Grade
C
Si
Mn
P
S
Cr
Ni
Mo
ASTM A29
4140
0.38-0.43
0.15-0.35
0.75-1.00
≤0.035
≤0.040
0.80-1.10
/
0.15-0.25
JIS G4053
SCM440
0.38-0.43
0.15-0.35
0.60-0.90
≤0.030
≤0.030
0.90-1.20
≤0.25
0.15-0.30
EN 10083-3
42CrMo4
0.38-0.45
≤0.40
0.60-0.90
≤0.025
≤0.035
0.90-1.20
0.15-0.30
/
ASTM A29 Standard Specification Steel Bars Carbon and Alloy Hot Wrought General Requirements
JIS G4053 2008 Low alloyed steels for machine structural use
Steel for quenching and tempering-Part3: Technical delivery conditions for alloy steels of EN 10083-3:2007
Application: High voltage bolts and nuts, crankshafts, camshafts, transmission axles, torsion bars, drive shafts, pump shafts, worm shafts, conveyor rollers, stems, pins, tie rods, clutch discs. Large-mass dies for hot stamping.1.6582 Steel is widely used in the aerospace industry for structural parts of flaps assembly, fuselage and landing gear, propeller plane axles.
Product Description: 1.6582 Steel is a heat treatable, low alloy steel containing nickel, chromium and molybdenum. It is known for its toughness and capability of developing high strength in the heat treated condition while retaining good fatigue strength. A very popular, versatile steel. It can be heat-treated to produce a wide range of tensile strength in moderate sections.
Annealing: Heat to 800℃ – 850 ℃ , hold until temperature is uniform throughout the section and cool in furnace.
Flame or Induction Hardening: 1.6582steel can be further surface hardened by either the flame or induction hardening methods resulting in a case hardness in excess of Rc 50. Parts should be heated as quickly as possible to the austenitic temperature range (830℃ – 860℃ ) and required case depth followed by an immediate oil or water quench, depending upon hardness required, workpiece size/shape and quenching arrangements. Following quenching to hand warm, most components should be tempered between 150℃ – 200℃ to remove quenching stresses in the case. This will have little effect on case hardness.
Hardening: Heat to 830℃ – 860℃, hold until temperature is uniform throughout the section, soak for 10 – 15 minutes per 25 mm section, and quench in oil, water, or polymer as required.
*Temper immediately while still hand warm.
Nitriding: 1.6582 steel can also be successfully nitrided, giving a surface hardness of up to Rc 60. Nitriding is carried out at 490℃– 530℃, followed by slow cooling (no quench) reducing the problem of distortion. Parts can therefore be machined to near final size, leaving a grinding allowance only. The tensile strength of the core is usually not affected since the nitriding temperature range is generally below the original tempering temperature employed. N.B. Nickel is inert to the action of nitrogen and in general resists its diffusion into steel. This can result in lower case hardness or longer nitriding cycle times for steels containing nickel such as 1.6582 steel.
Stress Relieving: Heat to 600℃– 650 ℃, hold until temperature is uniform throughout the section, soak for 1 hour per 25 mm of section, and cool in still air.
Tempering: Re-heat to 450℃– 660℃as required, hold until temperature is uniform throughout the section, soak for 1 hour per 25 mm of section, and cool in still air. N.B. Tempering should be avoided if possible within the range 250℃ – 450℃ due to temper brittleness.
Notes on Heat Treatment: Heating temperatures, rate of heating, cooling and soaking times will vary due to factors such as work piece size/shape also furnace type employed, quenching medium and work piece transfer facilities etc.
Chemcial composition:
Grade
C
Mn
P
S
Si
Cr
Ni
Mo
1.6582
0.30-0.38
0.50-0.80
0.025max
0.035max
0.40max
1.30-1.70
1.30-1.70
0.15-0.30
Packing details
In seaworthy packing, as your requirement.
Delivery details
within 10-50 days
Mill′s test certificate:
EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.
Bar: Origin Black, Orign cold rolled(drawn) bright, Turned, Peeled, Grinded
5. Size
Round bar: Diameter(mm) Max 800mm; Length(mm) Max 12000mm.
Plate: Thickness(mm) Max 800mm; Width(mm) Max 2300mm; Length(mm) Max 12000mm.
Condition: Cold rolled(drawn)≤50mm, Hot rolled≤12-250mm, Hot forged≥50mm.(Thickness/Diameter)
6. Heat Treatment
1) Forging
Preheat the steel carefully, then raise the temperature to 1150-1210°C for forging. Do not forge below 850°C. 4340 has good forging characteristics but care must be taken when cooling as the steel shows susceptibility to cracking. Cooling in ash or lime after forging is recommended
2)Annealing
Heat the steel slowly to 800-860°C and allow enough time for the steel to be thoroughly heated. Cool slowly in the furnace.
3)Stress Relieving
When components are heavily machined, ground or otherwise subject to cold work, stress relieving will be beneficial prior to hardening.
4)Hardening
4340 steel is usually supplied ready heat treated. If further heat treatment is required annealed 4340 should be heated slowly to 830-865°C and after adequate soaking at this temperature quench in oil. Temper as soon as the steel reaches room temperature.
5)Tempering
Heat the steel carefully to a suitable temperature selected by reference to a tempering chart or table, soak at the temperature for 2 hours per 25mm of section, then allow to cool in air.
7. Charateristics
4340 steel offers toughness and high strength in the heat treated condition, with good fatigue strength. Available in round bar 4340 is available fully certified and suitable for applications requiring a quality high tensile alloy steel. AISI 4340 is commonly supplied quenched and tempered with a hardness of between 24 to 29HRc
8. Applications
This grade of steel is suited for shock loading or stress concentration applications such as shafts, gears, bolts, nuts, pins and couplings.
AISI 5140/DIN 1.7035/JIS SCr440 Sae Alloy Steel Bar with Best Price
AISI 4340/DIN 1.6511/JIS SCM439 Sae Steel Round Bar with Best Price
SS316L Stainless steel round bar
Car Steel 42CrMo AISI 4140 Alloy Steel Round Bar Per kg
Escalator, Elevator, Doors Furniture Production tools, Kitchen appliances, freezers, cold rooms Auto Parts Machinery and Packaging Equipment and Medical devices Transport system
Chemcial composition:
Grade
C
Mn
P
S
Si
Cr
Ni
Mo
1.4432
0.030max
2.0 max
0.045 max
0.030max
1.0 max
16.50-18.50
10.50-13.0
2.50-3.00
Packing details
In seaworthy packing, as your requirement.
Delivery details
within 30-50 days
Mechanical properties:
• Enhanced corrosion resistance
compared to standard Cr-Ni grades
• Excellent formability
• Excellent weldability
• Excellent impact strength
Mill′s test certificate:
EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.
Our profiles range in cross sectional areas that fit within a 0.032″ to 2.000″ diameter circle. Depending upon the profile cross sectional area, profile configuration and customer requirements, we deliver these profiles in a wide variety of forms that include catch weight and pancake wound coils, exact length and random mill length bars, deburred and non-deburred saw cut pieces, as well as adiabatic sheared pieces for larger volume requirements. Precision cold drawing controls allow us to offer linear dimensional tolerances that range from our standard +/- 0.002″ to an optional +/- 0.0005″. For cold rolled profiles we offer standard dimensional tolerances of +/- 0.002 on thickness and +/- 0.005″ on width.
2.Product Details:
Round: .028”to3.00”(5-150mm)
Flat/Rectangles:width from .125”to5.00” Thickness from.125”to2.00”
Square: .028”to2.5”(10-150mm)
Hexagon: .028”to2.50”(5-90mm)
Centerless ground&Polished round bar: .812”to2.00”
Custom Engineered Special Steel Profile Shapes:.28”to3.00”
Tolerance: h8, h9, h10, h11
Straightness:0.5-1mm/meter
Roughness:Ra≤0.32μm, Rz≤1.6μm
3.Product Features
Wide variety of surface finishes: can reduce part finishing steps
Custom engineered processing: improves part manufacturing
Dimensional tolerances to 0.0005”: reduce machining yield losses
Custom engineered special profile shapes: reduce machining losses
Raw stock of hot rolled bar→Cleaning of abrasive scale→Coating of drawing lubrication→Drawing or Multi-pass drawing→Annealing→Cutting→Inspection→Package
6.Additional Services:
Short cutting; End preparation; Quench&Tempered; Controlled Atmosphere Bar Annealing; Turned&Polished.
7.Certification:
The product is supplied with 3.1.B inspection certificate, according to the standards EN 10204 and ISO 10474.
8.Packaging:
Steel Bar come in strapped bundles with anti-corrosion oil. The minimum weight of each bundle is 2000kg; the maximum bundle weight being 5000kg.
