AISI 4140 Round Bar, AISI 4340 Round Bar, Carbon Steel AISI 4140 Bars Distributors, UNS G41400 Hexagonal Bars, AISI 4140 Threaded Bar, 4140 AISI Polished Bars at Best Price, AISI 4140 Bars Round Bar Manufacturer in India.
Alloy Steel Round Bar is made up of different material grades such as A-182, F5, F9, F11, F12, F22 & F91. These are made up of various metal alloys that are corrosion resistant and strong. Mumbadevi Steel India is a leading supplier and manufacturer of these Alloy Steel Round Bar products. There are different compositions to the alloys and different specifications and standards
Supply Range for AISI alloy 4140 steel bar
4140 Steel Round Bar: diameter 8mm – 3000mm
4140 Steel Plate: thickness 10mm – 1500mm x width 200mm – 3000mm
4140 Steel Grade Square: 20mm – 500mm
Surface Finish: Black, Rough Machined, Turned or as per given requirements.
RFQ OF 4140 STEEL
Common 4140 Steel Specifications
|
Country
|
USA
|
German
|
British
|
Japan
|
China
|
Australia
|
|
Standard
|
ASTM A29
|
DIN 17200
|
BS 970
|
JIS G4105
|
GB/T 3077
|
AS 1444
|
|
Grades
|
4140
|
1.7225/
42crmo4
|
42CrMo4
|
SCM440
|
42CrMo
|
4140
|
4140 Steel Bar Chemical Composition
|
Standard
|
Grade
|
C
|
Mn
|
P
|
S
|
Si
|
Ni
|
Cr
|
Mo
|
|
ASTM A29
|
4140
|
0.38-0.43
|
0.75-1.00
|
0.035
|
0.040
|
0.15-0.35
|
–
|
0.8-1.10
|
0.15-0.25
|
|
EN 10250
|
42CrMo4/
1.7225
|
0.38-0.45
|
0.6-0.9
|
0.035
|
0.035
|
0.4
|
–
|
0.9-1.2
|
0.15-0.30
|
|
JIS G4105
|
SCM440
|
0.38-0.43
|
0.60-0.85
|
0.03
|
0.03
|
0.15-0.35
|
–
|
0.9-1.2
|
0.15-0.30
|
Mechanical Properties of AISI Alloy 4140 Steel Bar, Plates, Square
|
Properties
|
Metric
|
Imperial
|
|
Tensile strength
|
655 MPa
|
95000 psi
|
|
Yield strength
|
415 MPa
|
60200 psi
|
|
Bulk modulus (typical for steel)
|
140 GPa
|
20300 ksi
|
|
Shear modulus (typical for steel)
|
80 GPa
|
11600 ksi
|
|
Elastic modulus
|
190-210 GPa
|
27557-30458 ksi
|
|
Poisson’s ratio
|
0.27-0.30
|
0.27-0.30
|
|
Elongation at break (in 50 mm)
|
25.70%
|
25.70%
|
|
Hardness, Brinell
|
197
|
197
|
|
Hardness, Knoop (converted from Brinell hardness)
|
219
|
219
|
|
Hardness, Rockwell B (converted from Brinell hardness)
|
92
|
92
|
|
Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only)
|
13
|
13
|
|
Hardness, Vickers (converted from Brinell hardness)
|
207
|
207
|
|
Machinability (based on AISI 1212 as 100 machinability)
|
65
|
65
|
Forging
Preheat the steel carefully, heat to 1150 oC – 1200 oC maximum, hold until temperature is uniform throughout the section.
Do not forge below 850 oC.Following forging operation the work piece should be cooled as slowly as possible.
AISI 4140 Steel Grade Heat Treatment
Annealing
Heat ASTM 4140 steels to 800 oC – 850 oC, hold until temperature is uniform throughout the section and cool in furnace.
Normalizing
Heat steel alloy 4140 to 870 oC – 900 oC, hold until temperature is uniform throughout the section, soak for 10 – 15 minutes and cool in still air.
Tempering
Re-heat 4140 grade steel to 550 oC – 700 oC as required, hold until temperature is uniform throughout the section, soak for 1 hour per 25 mm of section, and cool in still air.
Hardening of AISI Alloy Steel 4140
AISI alloy 4140 steel bar, plate and square can be hardened by cold working, or heating and quenching.
SAE 4140 alloy steel is usually supplied ready heat treated to hardness in 18-22 HRC. If further heat treatment is required, then heat to 840 oC – 875 oC, 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.
Application of AISI alloy round 4140 steel bar
ASTM alloy 4140 steel bar, flat or plate material can be used for as wide variety of applications where greater toughness and wear resistance is needed over lower carbon grades. Typical applications for 4140 tool steel uses include Components, Adapters, Arbors,strippers, holder blocks, mold bases, ejectors, back up and support tooling, fixtures, jigs, molds, cams, drill collars, Axle Shafts, Bolts, Crankshafts,stubs, couplings, reamer bodies, axles, shafting, piston rods, rams, hydraulic machinery shafts, gears, sprockets, gear racks, chain links, spindles, tool bodies, tool holders, tie rods, Connection Rods, Chuck Bodies, Collets, Conveyor Pins & Rolls, Ejector Pins, Forks, Gears, Guide Rods, Hydraulic Shafts & Parts,Lathe Spindles, Logging Parts, Milling Spindles, Motor Shafts, Nuts, Pinch Bars, Pinions, Pump Shafts,boring bars,tracks, slides, wear strips or parts, forming dies, brake dies, trim dies, bolsters, machinery parts and components, etc.
Material Specification Chart of 42crmo4 Bar
|
Specifications
|
ASTM A182, ASME SA182
|
|
Dimensions
|
EN, DIN, JIS, ASTM, BS, ASME, AISI
|
|
Range
|
5mm to 500mm Dia in 100mm to 6000mm Length
|
|
Diameter
|
10 mm To 200 mm
|
|
Thickenss
|
0.5mm to 500mm Diameter
|
|
High Speed Steel (HSS), HCHCR & OHNS in Grade
|
M2, M3, M35, M42, T-1, T-4, T-15, T-42, D2, D3, H11, H13, OHNS-01 & EN52
|
|
Finish
|
Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish
|
|
Length
|
1000 mm Long To 6000 mm Long
|
|
Form
|
Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc.
|
Alloy Steel Rods ASTM Specification
|
Internal Standard
|
EN
|
DIN
|
SAE/AISI
|
|
EN 18
|
EN 18
|
37Cr4
|
5140
|
|
EN 19
|
EN 19
|
42Cr4Mo2
|
4140/4142
|
|
EN 24
|
EN 24
|
34CrNiMo6
|
4340
|
|
EN 353
|
EN 353
|
-
|
-
|
|
EN 354
|
EN 354
|
-
|
4320
|
|
SAE 8620
|
EN 362
|
-
|
SAE 8620
|
|
EN 1 A
|
EN 1 A
|
9SMn28
|
1213
|
|
SAE 1146
|
EN 8M
|
-
|
SAE 1146
|
|
EN 31
|
EN 31
|
100Cr6
|
SAE 52100
|
|
EN 45
|
EN 45
|
55Si7
|
9255
|
|
EN 45A
|
EN 45A
|
60Si7
|
9260
|
|
50Crv4
|
EN 47
|
50CrV4
|
6150
|
|
SAE 4130
|
-
|
25CrMo4
|
SAE 4130
|
|
SAE 4140
|
-
|
42CrMO4
|
SAE 4140
|
|
20MNCR5
|
-
|
-
|
-
|
We provide different types such as Square Bar, Forged Bar, Hex Bar, Polish Bar. Our Low Alloy Steel Round Bar are accessible to our customers in various range of diameters, thickness and sizes.
|
ASTM
|
UNS
|
DIN
|
|
F 5/F 5A
|
K 41545
|
12CrMo195
|
|
F 9
|
K 90941
|
X12CrMo91
|
|
F 11 (CL2)
|
K 11572
|
13CrMo44
|
|
F 12 (CL2)
|
-
|
16CrMo44
|
|
F 22 (CL3)
|
K 21590
|
10CrMo910
|
|
F 91
|
-
|
X10CrMoVNb9-1
|
SAE 4140 Rod Grade
|
STANDARD
|
WERKSTOFF NR.
|
UNS
|
|
Alloy Steel P5
|
1.7362
|
K41545
|
|
Alloy Steel P9
|
1.7386
|
S50400
|
|
42CrMo4 Round Bar
|
42CrMo4
|
-
|
|
Alloy Steel P11
|
1.7338
|
K11597
|
Alloy Steel 42crmo4 Round Bar Dimensions Standard
|
Diameter or
Width
(mm)
|
Weight per meter
|
Sectional Area
|
Perimeter
|
|
Square
(kg)
|
Round
(kg)
|
Square
(cm²)
|
Round
(cm²)
|
Square
(cm)
|
Round
(cm)
|
|
5.0
|
0.20
|
0.15
|
0.25
|
0.20
|
2.0
|
1.57
|
|
5.5
|
0.24
|
0.19
|
0.30
|
0.24
|
2.2
|
1.78
|
|
6.0
|
0.28
|
0.22
|
0.36
|
0.28
|
2.4
|
1.88
|
|
7.0
|
0.38
|
0.30
|
0.49
|
0.38
|
2.8
|
2.20
|
|
8.0
|
0.50
|
0.39
|
0.64
|
0.50
|
3.2
|
2.51
|
|
9.0
|
0.64
|
0.50
|
0.81
|
0.64
|
3.6
|
2.83
|
|
10
|
0.73
|
0.63
|
1.00
|
0.79
|
4.0
|
3.14
|
|
11
|
0.95
|
0.75
|
1.21
|
0.95
|
4.4
|
3.46
|
|
12
|
1.13
|
0.89
|
1.44
|
1.13
|
4.8
|
3.77
|
|
14
|
1.54
|
1.21
|
1.96
|
1.54
|
5.6
|
4.40
|
|
16
|
2.01
|
1.58
|
2.56
|
2.01
|
6.4
|
5.03
|
|
18
|
2.54
|
2.00
|
3.24
|
2.54
|
7.2
|
5.65
|
|
20
|
3.14
|
2.47
|
4.00
|
3.14
|
8.0
|
6.28
|
|
22
|
3.80
|
2.98
|
4.84
|
3.80
|
8.8
|
6.91
|
|
25
|
4.91
|
3.85
|
6.25
|
4.91
|
10.0
|
7.85
|
|
28
|
6.15
|
4.83
|
7.84
|
6.16
|
11.2
|
8.80
|
|
32
|
8.04
|
6.31
|
10.24
|
8.04
|
12.8
|
10.05
|
|
36
|
10.17
|
7.99
|
12.96
|
10.18
|
14.4
|
11.31
|
|
40
|
12.56
|
9.86
|
16.00
|
12.57
|
16.0
|
12.57
|
|
45
|
15.90
|
12.49
|
20.25
|
15.90
|
18.0
|
14.14
|
|
50
|
19.62
|
15.41
|
25.00
|
19.64
|
20.0
|
15.71
|
|
56
|
24.62
|
19.34
|
31.36
|
24.63
|
22.4
|
17.59
|
|
63
|
31.16
|
24.47
|
36.69
|
31.17
|
25.2
|
19.79
|
|
71
|
39.57
|
31.08
|
50.41
|
39.59
|
28.4
|
22.31
|
|
80
|
50.24
|
39.46
|
64.00
|
50.27
|
32.0
|
25.13
|
Composition Chart of Alloy Steel Bright Bars
|
Element
|
C
|
Cr
|
Mn
|
Mo
|
P
|
S
|
Si
|
Ni
|
|
F5
|
0.15 Max
|
4.0-6.0
|
0.30-0.60
|
0.44-0.65
|
0.035 Max
|
0.030 Max
|
0.50 Max
|
0.50 Max
|
|
F1
|
0.15 Max
|
3.0-5.0
|
0.30-0.60
|
0.40-0.50
|
0.035 Max
|
0.030 Max
|
0.50 Max
|
0.50 Max
|
|
F22
|
0.05-0.15
|
2.00-2.50
|
0.30-0.60
|
0.90-1.10
|
0.035 Max
|
0.040 Max
|
0.50 Max
|
-
|
|
F91
|
0.08-0.12
|
8.0-9.5
|
0.30-0.60
|
0.85-1.05
|
0.020 Max
|
0.010 Max
|
0.20-0.50
|
0.40 Max
|
|
F9
|
0.15 Max
|
8.0-10.0
|
0.30-0.60
|
0.90- 1.10
|
0.030 Max
|
0.030 Max
|
0.50- 1.00
|
-
|
|
42CrMo4
|
0.380 - 0.45 %
|
0.90 - 1.20 %
|
0.60 - 0.90 %
|
0.15 - 0.30 %
|
≤ 0.035 %
|
≤ 0.035 %
|
-
|
-
|
|
F11
|
0.10-0.20
|
1.00-1.50
|
0.40-0.65
|
0.44-0.65
|
0.025 Max
|
0.040 Max
|
0.50-0.80
|
-
|
ASTM A182 Alloy Polished Bar Mechanical Properties Chart
|
grade
|
Tensile Strength (ksi) min
|
Elongation (% in 50mm) min
|
Yield Strength 0.2% Proof (ksi) min
|
|
F9
|
415
|
30
|
205
|
|
F5
|
275
|
485
|
20
|
AISI Alloy 4340 Steel Supply Range
4340 Steel Round Bar: diameter 8mm – 3000mm
4340 Steel Plate: thickness 10mm – 1500mm x width 200mm – 3000mm
4340 Steel Grade Square: 20mm – 500mm
Surface Finish: Black, Rough Machined, Turned or as per given requirements.
RFQ OF 4340 STEEL
AISI 4340 Steel Specification and Relevant Standards
|
Country
|
USA
|
Britain
|
Britain
|
Japan
|
|
Standard
|
ASTM A29
|
EN 10250
|
BS 970
|
JIS G4103
|
|
Grades
|
4340
|
36CrNiMo4/
1.6511
|
EN24/817M40
|
SNCM 439/SNCM8
|
ROD SPECIFICATION
|
Grade
|
4340
|
|
Specification
|
SAE 4340 Round Bar
|
|
Square bar size
|
4 to 100mm
|
|
Section
|
3.0 to 12.0mm thickness
|
|
Round bar size
|
Diameter: 3-~800mm
|
|
Angle bar size
|
3mm*20mm*20mm~12mm*100mm*100mm
|
|
Hex Bar size
|
2-100mm A/F
|
|
Flat bar size
|
Thickness: 2 -100mm
|
|
Width: 10 to 500mm
|
|
Channel Bar
|
80 x 40mm to 150 x 75mm section; 5.0 to 6.0mm thickness
|
|
Rectangles Size
|
33 x 30mm to 295 x 1066mm
|
|
Hollow Bar
|
32mm OD x 16mm ID to 250mm OD x 200mm ID)
|
|
Billet Size
|
1/2" to 495mm Diameter
|
|
Round Bar Standard Dimensions
|
Diameter / Height:
PGRRRRD Rod and Bar Sizes : 0.5 inches / 0.625 inches / 0.75 inches / 0.875 inches / 1.0 inches / 1.125 inches / 1.25 inches / 1.375 inches / 1.5 inches / 1.75 inches / 2.0 inches / 2.25 inches / 2.5 inches / 2.75 inches / 3.0 inches / 3.25 inches / 3.5 inches / 3.75 inches / 4.0 inches / 4.25 inches / 4.5 inches / 5.0 inches / 5.25 inches / 5.5 inches / 6.0 inches / 7.0 inches / 8.0 inches / 9.0 inches.
|
|
Surface
|
Bright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline
|
|
Tolerance
|
H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements
|
|
Technique
|
PGRRRRD Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bar, Rod
|
|
Condition
|
Hardened & tempered, annealed
|
|
Finish
|
Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black
|
|
Form
|
Round, Rod, T-Bar, Channel Bar, Precision Ground Bar, Flat Bar, Square, Blocks, Round Rod, Rings, Hollow, Triangle, Rectangle, Hex (A/F), Threaded, Half Round Bar, Profiles, Billet, Ingot, I/H Bar, Forging etc.
|
|
Our stockyad location for fast delivery across India
|
Shivamogga, Agra, Bengaluru, Hyderabad, Tiruchirappalli, Ahmedabad, Pimpri-Chinchwad, Bhubaneswar, Mumbai, Chennai, Noida, Tirunelveli, Pune, Coimbatore, Thiruvananthapuram, Dhanbad, Navi Mumbai
|
|
Processing
|
Bar cutting to 650mm
|
|
Our SAE 4340 Hex Bar Round bar conforms to NACE MR0175/ISO 15156
|
Condition
|
H&T
|
Hardened and tempered.
|
|
ANN
|
Annealed
|
|
PH
|
Precipitation hardened.
|
ASTM 4340 Steels And Equilvalents Chemical Composition
|
Standard
|
Grade
|
C
|
Mn
|
P
|
S
|
Si
|
Ni
|
Cr
|
Mo
|
|
ASTM A29
|
4340
|
0.38-0.43
|
0.60-0.80
|
0.035
|
0.040
|
0.15-0.35
|
1.65-2.00
|
0.70-0.90
|
0.20-0.30
|
|
EN 10250
|
36CrNiMo4/
1.6511
|
0.32-0.40
|
0.50-0.80
|
0.035
|
0.035
|
≦0.40
|
0.90-1.20
|
0.90-1.2
|
0.15-0.30
|
|
BS 970
|
EN24/817M40
|
0.36-0.44
|
0.45-0.70
|
0.035
|
0.040
|
0.1-0.40
|
1.3-1.7
|
1.00-1.40
|
0.20-0.35
|
|
JIS G4103
|
SNCM 439/SNCM8
|
0.36-0.43
|
0.60-0.90
|
0.030
|
0.030
|
0.15-0.35
|
1.60-2.00
|
0.60-1.00
|
0.15-0.30
|
AISI Alloy 4340 Steel Mechanical Properties
|
Mechannical Properties
(Heat Treated Condition )
|
Condition
|
Ruling section
mm
|
Tensile Strength MPa
|
Yield Strength
MPa
|
Elong.
%
|
Izod Impact
J
|
Brinell
Hardness
|
|
T
|
250
|
850-1000
|
635
|
13
|
40
|
248-302
|
|
T
|
150
|
850-1000
|
665
|
13
|
54
|
248-302
|
|
U
|
100
|
930-1080
|
740
|
12
|
47
|
269-331
|
| |
|
V
|
63
|
1000-1150
|
835
|
12
|
47
|
293-352
|
|
W
|
30
|
1080-1230
|
925
|
11
|
41
|
311-375
|
|
X
|
30
|
1150-1300
|
1005
|
10
|
34
|
341-401
|
| |
|
Y
|
30
|
1230-1380
|
1080
|
10
|
24
|
363-429
|
|
Z
|
30
|
1555-
|
1125
|
5
|
10
|
444-
|
Thermal Properties
|
Properties
|
Metric
|
Imperial
|
|
Thermal expansion co-efficient (20°C/68°F, specimen oil hardened, 600°C (1110°F) temper
|
12.3 µm/m°C
|
6.83 µin/in°F
|
|
Thermal conductivity (typical steel)
|
44.5 W/mK
|
309 BTU in/hr.ft².°F
|
Forging of 4340 Alloy Steel
Preheat the steel 4340 first, heat up to 1150°C – 1200°C maximum for forging, hold until temperature is uniform throughout the section.
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. Following forging operation the work piece should be cooled as slowly as possible. And cooling in in sand or dry lime is recommended etc.
RFQ OF 4340 STEEL
AISI 4340 Steel Grade Heat Treatment
Stress Relieving
For pre-hardened steel stress relieving is achieved by heating steel 4340 to between 500 to 550°C. Heat to 600 °C – 650 °C, hold until temperature is uniform throughout the section, soak for 1 hour per 25 mm section, and cool in still air.
Annealing
A full anneal may be done at 844°C (1550 F) followed by controlled (furnace) cooling at a rate not faster than 10°C (50 F) per hour down to 315°C (600 F). From 315°C 600 F it may be air cooled.
Tempering
AISI 4340 alloy steel should be in the heat treated or normalized and heat treated condition before tempering. The tempering temperature for depends upon the strength level desired. For strength levels in the 260 – 280 ksi range temper at 232°C (450 F). For strength in the 125 – 200 ksi range temper at 510°C (950 F). And don’t temper the 4340 steels if it is in the 220 – 260 ksi strength range as tempering can result in degradation of impact resistance for this level of strength.
Tempering should be avoided if possible within the range 250 °C – 450 °C due to temper brittleness.
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