HR 4340 ALLOY BAR, 4340 round bar, 4340 round bar sizes, 4340 round bar price, 4340 round bar weight, 4340 round bar stock, 4340 round bar specification
HR 4340 ALLOY BAR In Stock - 4340 round bar sale,alloy 4340 bar suppliers

4340 alloy steel round bar suppliers

buy hr 4340 alloy bar, aisi 4340 hr ht bar, 4340 hr ht bar, aisi 4340 hr, 4340 bar, 4340 hex bar, 4340 steel square bar in all shape & customized size from 4340 bar suppliers in India at best price , Get free quote.

Delivering High Quality 4340 steel round bar, 4340 alloy steel square bar, 4340 annealed bar, 4340 steel round bar, 4340 ht flat bar, 4340 ht square bar on time

 

HR 4340 alloy steel bar
SAE 4340 Alloy Round Bar
AISI 4340 Steel Bar
HR 4340 alloy steel bar
SAE 4340 Alloy Round Bar
AISI 4340 Steel Bar
Table of contents

 


AISI 4340/JIS SNCM439 Alloy Steel Bar

Reliant Pipe (Iso Certified ) Alloy Steel 4340 Bar Suppliers in India, Check 4340 Round Bar Price List India, aisi 4340 hr ht bar Stockist in Mumbai, Bengaluru, Chennai, USA, UK, Houston, Dubai, Seoul, Hyderabad, Abu Dhabi, canada, singapore, Ahmedabad, Tehran, south africa, houston, Riyadh, Vadodara, London, Coimbatore, Jakarta, Istanbul, Bangkok, Kuwait City, uae. 4340 alloy steel round bar is a nickel-chromium-molybdenum alloy steel known for its toughness and its ability to attain high strengths in the heat-treated condition. It has very good fatigue resistance.

4340 alloy steel bar is used heavily in the aerospace industry due to its ultra-high strength. When heat treated it is known for its toughness while preserving good fatigue strength. For highly stressed parts it is excellent choice. It can be machined by all customary methods. This material is available in both vacuum melt (VM) and air melt (AM).

HR 4340 alloy steel bar Specification
Steel Round Bar type
AISI 4340 Alloy Steel Round Bars
Die Steel Bar
Standards

ASTM A689, JIS G4801, DIN 17221, GB/T 18254, ASTM A295, JIS G4805, etc.

Spring steel
65Mn, 1566, 60Si2Mn, 9260, etc.
Bearing steel
GCr15, SAE52100, GCr15SiMn, 100CrMnSi6-4, SJU2, etc.
Cold heading steel
ML25, ML35, etc.
Alloy structural steel

40CrNiMo, SAE4330, 42CrMo, 15Cr2Ni2, 40CrNi2Mo, 35CrMoV,
12Cr1MoV, ASTM4130, SCM420, 40CrV, etc.

Military steel

20Cr2Ni4A, 18Cr2Ni4WA, 23CrNiMo7-4-7, etc.

AISI 4340 Alloy Steel Round Bars Range

Range – 3.17mm to 350mm dia

AISI 4340 Alloy Steel Round Bars Diameter
5mm-500mm (Customized size is acceptable)
AISI 4340 Alloy Steel Round Bars Length
1m-9m or according to the customer’s requirement.
AISI 4340 Alloy Steel Round Bars Type
Round bar, rod, square bar, flat bar, hexagon bar, angle bar, channel bar, threaded bar
AISI 4340 Alloy Steel Round Bars Technique
Forged/Hot Rolled/Cold Drawn/Peeled
AISI 4340 Alloy Steel Round Bars Surface
bright round bar, pickled round bar, black round bar
Other processing service
Hot dipped Galvanized, pre-galvanized, Color painting,coated, cutting, bending,punching
Package Details
Standard seaworthy package(wooden boxes package, pvc package, or other package)
Export Area
USA, UAE, Europe, Asia, Middle East, Africa, South America

 

SHAPE
POUNDS PER FOOT
Round
D2 x 2.67
Hexagon
D2 x 2.945
Square
D2 x 3.4
Flat
Thickness (in.) x Width (in.) x 3.4

 

AISI 4340 alloy steel round bar Similar Grades

  • Standard: GB/AISI/JIS
  • Grade: 40CrNiMoA/4340/SNCM439

AISI 4340 alloy steel round bar Available Size

  • Hot rolled round bar: dia16mm-dia310mm
  • Hot rolled flat bar: thickness5mm-30mm, width50mm-130mm
  • Hot rolled square bar: 16mm*16mm-100mm*100mm
  • Forged steel round bar: dia100mm-dia1500mm
  • Forged flat bar: thickness20mm-400mm, width80mm-1000mm
  • Forged steel block: 100mm*100mm-1000mm*1000mm
  • Cold drawn round bar: dia4mm-dia100mm

Heat Treatment

Annealing/Normalizing/Hardening/Tempering/Quenching

  • Annealing: AISI 4340 round bar alloy steel is annealed at 844°C (1550°F) followed by cooling the furnace.
  • Tempering: AISI 4340 round bar alloy steel should be in the heat treated or normalized and heat treated condition before tempering. Tempering temperatures depend upon the desired strength level.
  • Hardening: AISI 4340 round bar alloy steel can be hardened by cold working or heat treatment.


AISI 4340 Steel Bar Equivalent Grades
Country
USA
German
British
Japan
China
Australia
Standard
ASTM A29
DIN 17200
BS 970
JIS G4105
GB/T 3077
AS 1444
Grades
4340
1.7225/
42crmo4
42CrMo4
SCM440
42CrMo
4340

We Keep Bulk Stock of Alloy Steel AISI 4340 Round Bar, SAE 4340 Round Bars, AISI 4340 Alloy Steel Round Bars, AISI 4340 Rods, SAE 4340 Rods in various sizes and wall thickness

AISI 4340 Steel Bar Stock
4340 round bar
aisi 4340 flat bar
sae 4340 steel hex bar
4340 round bar
aisi 4340 flat bar
sae 4340 steel hex bar
4340 rod
4340 bright bar
4340 black bar
4340 rod
4340 bright bar
4340 black bar
4340 cold drawn bar
4340 annealed bar
4340 hollow bar
4340 cold drawn bar
4340 annealed bar

4340 hollow bar

4340 forged bar
AISI / SAE 4340 Threaded Bar
AISI / SAE 4340 Square Bar
4340 forged bar
AISI / SAE 4340 Threaded Bar
AISI / SAE 4340 Square Bar
Alloy Steel AISI 4340 Extruded Round Bar
Alloy Steel AISI 4340 Turned Round Bars
Alloy Steel AISI 4340 Peeled Round Bars
Alloy Steel AISI 4340 Extruded Round Bar
Alloy Steel AISI 4340 Turned Round Bars
Alloy Steel AISI 4340 Peeled Round Bars
Alloy Steel AISI 4340 Polished Round Bars
Alloy Steel AISI 4340 Smooth turned Round Bars
Alloy Steel AISI 4340 Hot rolled Round bar
Alloy Steel AISI 4340 Polished Round Bars
Alloy Steel AISI 4340 Smooth turned Round Bars
Alloy Steel AISI 4340 Hot rolled Round bar

 

Other Types of 4340 hr steel bar
  • 4340 round bar Price List In India
  • aisi 4340 flat bar manufacturers in india
  • sae 4340 steel hex bar price list india
  • 4340 rod manufacturers in india
  • 4340 shafts price list india
  • 4340 bar houston suppliers in india
  • 4340 annealed bar price in india
  • 4340 alloy bar suppliers in india
  • 4340 hollow bar manufacturers in india
  • 4340 steel bar price in india
  • aisi 4340 hr ht bar suppliers in india
  • aisi 4340 steel price per kg India
  • 4340 bright bar suppliers in india
  • 4340 black bar manufacturers in india
  • 4340 cold drawn bar price list india
  • 4340 forged bar suppliers in india
  • 4340 ht flat bar manufacturers in india
  • aisi 4340 hr ht bar price list india
  • 4340 htsr flat bar suppliers in india
  • AISI / SAE 4340 Threaded Bar manufacturers in india
  • AISI / SAE 4340 Square Bar price in india
  • 4340 round bar suppliers australia

 

Hot Rolled 4340 Bar price in india
  • 4340 steel price per kg
    US $800-1000 / Metric Ton
  • AISI 4340 Round Bar price per kg
    INR : Rs 65 Per Kg
  • Sae 4340 Flat Bars price per kg
    INR : Rs 100 Per Kg
  • AISI 4340 Steel Plate - 3 To 500 Mm
    INR : Rs 120 Per Kg
  • 42crmo Aisi 4340 Alloy Steel Round Bar Per Kg
    US $200-1000 / Metric Ton
  • sae 4340 steel price,aisi 4340 steel,4340 steel price per kg
    US $0.8-1.2 / Kilogram
  • Hot Rolled Peeled Steel Round Bars AISI 4340 steel price per kg
    US $890.0-900.0 / Tons
  • 4340 4340 ck67 alloy steel plate price per kg
    US $600-800 / Ton
  • aisi 4340 stainless steel round bar price per kg with bright surface
    US $868-2586 / Ton
  • 4340 Plate Steel,4340 Alloy Steel,4340 Steel Price Per KG
    US $800-1500 / Ton
  • sae 4340 alloy steel bar price per kg
    US $500-1600 / Ton

4340 alloy bar Manufacturer, 4340 annealed bar stockist, 4340 steel flat bar, 4340 rectangular bar, 4340 hollow bar, 4340 steel hollow bar Exporter, check 4340 round bar price
SAE 4340 Alloy Round Bar Properties

alloy 4340 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/
1.7224
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

HR 4340 steel bar Mechanical Properties
  • Density: 7.85 g/cm^3
  • Melting Range:1340-1380°C
  • Specific Heat Capacity:448 J/kg*K
  • Electrical Resistivity:1.09 µΩ.m
  • Coefficient of Thermal 
  • Expansion from -18-93°C:11.3 µm/mm/°C
  • Coefficient of Thermal Expansion from -18-649°C:14.6 µm/mm/°C
ROOM TEMPERATURE MECHANICAL & PHYSICAL PROPERTIES AT VARIOUS TEMPERING TEMPERATURE (NORMALISED AT 899-927 °C/AUSTENITISED AT 816-829°C/OIL QUENCHED) 204°C 260°C 316°C 427°C 538°C 593°C 649°C
Ultimate Tensile Strength /MPa 1905 1830 1140
0.2% Yield Strength /MPa 1530 1530 1035
Reduction of area % 35 25 60
Elongation % 11 8 18
Room Temperature Hardness/ Rockwell C at Various Tempering Temperature (Austenitised at 843°C/Oil Quenched/Tempered Twice for 2+2 Hours) 52 47 41 35 25

 

MECHANICAL & PHYSICAL PROPERTIES 21.1°C 100°C 204.4°C 315.6°C 400°C 537.8°C 648.9°C 700°C 760°C 815°C 870°C 982°C
Ultimate Tensile Strength /MPa 792 - - - - 726 473 - 286 - 139 66
0.2% Yield Strength /MPa 407 - - - - 363 275 - 152 - 68 31
Reduction of area % - - - - - - - - - - - -
Elongation % 31 - - - - 27 32 - 75 - 90 91
1,000 hr Rupture Strength - - - - - - 83 47 26 15 8.3 -
Coefficient of Thermal Expansion /µm/m°C ** - 11 12.7 13.4 13.9 14.3 15 15.4 - 16.5 17.1 18.2
Thermal Conductivity /kcal/(hr.m.°C) ** 10.06 - - - - - - - - - - -
Modulus of Elasticity / GPa 221 216 210 203 197 190 181 173 - 165 153 140

HARDNESS/ ROCKWELL C AT VARIOUS TESTING TEMPERATURE 21 °C 93°C 204°C 316°C 427°C 538°C
Condition A: Normalised at 899 °C for 1 hour + air cool/ Austenitised at 816 °C for 0.5 hour + oil quench/ Tempered at 246 °C for 2+2 hours +air cool 49 48.5 48 45.5 35 18
Condition B: Normalised at 899 °C for 1 hour + air cool/ Austenitised at 816 °C for 0.5 hour + oil quench/ Tempered at 482 °C for 2+2 hours +air cool 40.5 38 36.5 34 31.5 18
Condition C: Normalised at 899 °C for 1 hour + air cool/ Austenitised at 802 °C for 0.5 hour + oil quench/ Tempered at 593 °C for 2 hours +air cool 34 32.5 30 27.5 24 13

 

Aircraft Quality 4340 per 6359 Hot Rolled Bar

SAE 4340 Chromoly steel is ideal for parts requiring critical harden-ability and high strength metal. For example, gears and aircraft parts which operate under highly stressed, severe conditions perform exceptionally when made from 4340 AQ metal. The term Aircraft Quality (AQ) steel means it is suitable for the manufacturing of aircraft parts which are subject to magnetic particle inspection after machining.

AMS 6359 - AISI 4340 (E4340) Aircraft Quality Steel Plate Size Table

SIZE
INCHES
WGT./
SQ.FT.
18" x 72"
ANNEALED
36" x 72"
ANNEALED
72" x 144"
ANNEALED
0.190
7.945
HR
HR
HR
1/4
10.20
HR
HR
HR
5/16
12.75
HR
HR
HR
3/8
15.30
HR
HR
HR
1/2
20.40
HR
HR
HR
5/8
25.50
HR
HR
HR
3/4
30.60
HR
HR
HR
7/8
35.70
HR
HR
HR
1
40.80
HR
HR
HR
1 1/4
51.00
HR
HR
HR
1 1/2
61.20
HR
HR
HR
1 3/4
71.40
HR
HR
HR
2
81.60
HR
HR
HR
2 1/2
102.00
HR
HR
HR
3
122.40
HR
HR
HR
3 1/2
142.80
HR
HR
HR
4
163.20
HR
HR
HR
4 1/2
183.50
HR
HR
HR
5
204.00
HR
HR
HR
6
244.83
HR
HR
HR
  • Material may also meet specs ASTM-A829, AMS-2301, EN10204.

 

alloy steel aisi 4340 bar weight chart per linear foot
SIZE IN INCHES
ROUND
SQUARE
OCTAGON
HEXAGON
SIZE IN INCHES
ROUND
SQUARE
OCTAGON
HEXAGON
1/16
.010
.013
.011
.012
11/16
1.262
1.607
1.333
1.392
5/64
.017
.022
.018
.019
45/64
1.320
1.681
1.394
1.456
3/32
.023
.029
.024
.025
23/32
1.380
1.756
1.487
1.521
7/64
.031
.039
.033
.034
47/64
1.440
1.834
1.521
1.588
1/8
.042
.053
.044
.046
3/4
1.502
1.913
1.586
1.656
9/64
.053
.067
.056
.058
25/32
1.630
2.075
1.721
1.797
5/32
.065
.083
.069
.072
13/16
1.763
2.245
1.862
1.944
11/64
.079
.100
.083
.087
27/32
1.901
2.421
2.008
2.096
3/16
.094
.120
.099
.104
7/8
2.045
2.603
2.159
2.254
13/64
.110
.140
.116
.121
29/32
2.193
2.792
2.316
2.418
7/32
.128
.163
.135
.141
15/16
2.347
2.988
2.479
2.588
15/64
.147
.187
.155
.162
31/32
2.506
3.191
2.646
2.763
1/4
.167
.213
.176
.184
1
2.670
3.400
2.820
2.945
17/64
.188
.240
.199
.207
1-1/16
3.015
3.838
3.183
3.324
9/32
.211
.269
.223
.233
1-1/8
3.380
4.303
3.569
3.727
19/64
.235
.300
.248
.259
1-3/16
3.766
4.795
3.977
4.152
5/16
.261
.332
.275
.288
1-1/4
4.172
5.313
4.407
4.601
21/64
.288
.360
.304
.318
1-5/16
4.600
5.857
4.858
5.072
11/32
.316
.402
.334
.348
1-3/8
5.049
6.428
5.332
5.567
23/64
.345
.439
.364
.381
1-7/16
5.518
7.026
5.827
6.085
3/8
.376
.478
.397
.414
1-1/2
6.008
7.650
6.345
6.625
25/64
.408
.519
.431
.450
1-9/16
6.519
8.301
6.885
7.189
13/32
.441
.561
.466
.486
1-5/8
7.051
8.978
7.446
7.775
27/64
.475
.605
.502
.524
1-11/16
7.604
9.682
8.030
8.385
7/16
.511
.651
.540
.564
1-3/4
8.178
10.41
8.634
9.018
29/64
.548
.698
.579
.604
1-13/16
8.773
11.17
9.265
9.673
15/32
.587
.747
.620
.647
1-7/8
9.388
11.95
9.911
10.35
31/64
.627
.798
.662
.692
1-15/16
10.02
12.76
10.58
11.05
1/2
.668
.850
.705
.736
2
10.68
13.60
11.28
11.78
33/64
.710
.904
.750
.783
2-1/16
11.36
14.46
11.99
12.53
17/32
.754
.960
.796
.831
2-1/8
12.06
15.35
12.73
13.30
35/64
.799
1.017
.844
.881
2-3/16
12.78
16.27
13.49
14.09
9/16
.845
1.076
.892
.932
2-1/4
13.52
17.21
14.27
14.91
37/64
.893
1.136
.943
.985
2-5/16
14.28
18.18
15.08
15.75
19/32
.941
1.199
.994
1.038
2-3/8
15.06
19.18
15.91
16.61
39/64
.992
1.263
1.048
1.094
2-7/16
15.87
20.20
16.75
17.49
5/8
1.043
1.328
1.102
1.150
2-1/2
16.69
21.25
17.62
18.40
41/64
1.096
1.395
1.207
1.209
2-9/16
17.53
22.33
18.52
19.34
21/32
1.150
1.464
1.214
1.268
2-5/8
18.40
23.43
19.43
20.29
43/64
1.205
1.535
1.272
1.329
2-11/16
19.29
24.56
20.37
21.27

 

SIZE IN INCHES
ROUND
SQUARE
OCTAGON
HEXAGON
SIZE IN INCHES
ROUND
SQUARE
OCTAGON
2-3/4
20.19
25.71
21.33
22.27
6
96.13
122.4
101.5
2-3/16
21.12
26.90
22.31
23.29
6-1/16
98.15
125.0
103.6
2-7/8
22.07
28.10
23.31
24.34
6-1/8
100.2
127.6
105.8
2-5/16
23.04
29.34
24.33
25.41
6-3/16
102.2
130.2
108.0
3
24.03
30.60
25.38
26.50
6-1/4
104.3
132.8
110.2
3-1/16
25.05
31.89
26.45
27.62
6-5/16
106.4
135.5
112.4
3-1/8
26.08
33.20
27.54
28.76
6-3/8
108.5
138.2
114.6
3-3/16
27.13
34.55
28.65
29.92
6-7/16
110.7
140.9
116.9
3-1/4
28.21
35.91
29.79
6-1/2
112.8
143.7
119.1
3-5/16
29.30
37.21
30.94
6-9/16
115.0
146.4
121.4
3-3/8
30.42
38.73
32.12
6-5/8
117.2
149.2
123.8
3-7/16
31.55
40.18
33.32
6-11/16
119.4
152.1
126.1
3-1/2
32.71
41.6
34.54
6-3/4
121.7
154.9
128.5
3-9/16
33.90
43.15
35.79
6-13/16
123.9
157.8
130.9
3-5/8
35.09
44.68
37.07
6-7/8
126.2
160.7
133.3
3-1/16
36.31
46.23
38.34
6-15/16
128.5
163.6
135.7
3-3/4
37.55
47.81
39.65
7
130.9
166.6
138.2
3-3/16
38.81
49.42
40.99
7-1/16
133.2
169.6
140.7
3-7/8
40.10
51.05
42.34
7-1/8
135.6
172.6
143.2
3-5/16
41.40
52.71
43.72
7-3/16
138.0
175.6
145.7
4
42.73
54.40
45.12
7-1/4
140.4
178.7
148.2
4-1/16
44.07
56.11
46.54
7-5/16
142.8
181.8
150.8
4-1/8
45.44
57.85
47.98
7-3/8
145.2
184.9
153.4
4-3/16
46.83
59.62
49.45
7-7/16
147.7
188.1
156.0
4-1/4
48.23
61.41
50.93
7-1/2
150.2
191.3
158.6
4-5/16
49.66
63.23
52.44
7-5/8
155.3
197.7
164.0
4-3/8
51.11
65.08
53.98
7-3/4
160.4
204.2
169.4
4-7/16
52.58
66.95
55.53
7-7/8
165.6
210.9
174.9
4-1/2
54.08
68.85
57.10
8
170.9
217.6
180.5
4-9/16
55.59
70.78
58.70
8-1/4
181.8
230.9
192.0
4-5/8
57.12
72.73
60.32
8-1/2
192.9
245.7
203.8
4-1/16
58.68
74.71
61.96
8-3/4
204.4
259.6
215.8
4-3/4
60.25
76.71
63.63
9
216.3
275.4
228.4
4-3/16
61.85
78.75
65.32
10
267.0
340.0
282.0
4-7/8
63.46
80.80
67.02
11
323.1
411.4
341.2
4-5/16
65.10
82.89
68.75
12
384.4
489.6
406.1
5
66.76
85.00
70.50
13
451
575
476
5-1/16
68.44
87.14
72.27
14
523
666
552
5-1/8
70.14
89.30
74.07
15
601
765
634
5-3/16
71.86
91.50
75.89
16
684
871
721
5-1/4
73.60
93.71
77.72
17
772
982
814
5-5/16
75.36
95.96
79.59
18
865
1102
912
5-3/8
77.15
98.23
81.47
19
964
1227
1017
5-7/16
78.95
100.5
83.38
20
1068
1360
1127
5-1/2
80.78
102.9
85.30
21
1177
1499
1242
5-9/16
82.62
105.2
87.25
22
1292
1645
1363
5-5/8
84.49
107.6
89.23
23
1412
1798
1490
5-1/16
86.38
110.0
91.22
24
1538
1958
1622
5-3/4
88.29
112.4
9323
25
1669
2125
1760
5-3/16
90.22
114.9
95.27
26
1805
2298
1904
5-7/8
92.17
117.4
97.33
27
1946
2478
2053
5-5/16
94.14
119.9
99.41
28
2093
2665
2208

 

4340 hr alloy bar sizes
Title
Type/Filesize

4140    

W-Nr 1.7225, AS 4140, BS EN19A, AISI 4140   
Cr Mo steel for applications requiring high tensile strength and toughness values, in particular in medium and large cross sections in the quenched and tempered condition.

Size Range:

Rd 10mm - 650mm, Hollow 45/28 - 200/140mm,
Hex 19 - 75mm A/F
Sq 28mm - 127mm
Fl 76.2x38.1mm
Chrome Bar 19.05mm - 101.6mm
Ground 12.7mm - 110mm (H9 Toll)
Peeled & Polished 19.05mm - 101.6mm (H11 Toll).

Other size available on request

709M

W-Nr 1.7225, AS 4140, BS EN19A, AISI 4140
When compared to other 4140 steels ASSAB 709M has guaranteed superior machinability characteristics in all sizes.

Size Range:
Rd 16mm - 250mm

Other sizes available on request.

4340    

W-Nr 1.6565, AS 4340, BS ~EN24, AISI 4340   
Ni Cr Mo steel for applications requiring high tensile strength and toughness values, particularly in large cross sections in the quenched and tempered condition.

Size Range:
Rd 17mm-460mm

Other sizes available on request.

EN-25    

W-Nr 1.6743, AS X9931, BS EN25   
21/2% Ni Cr Mo alloy steel with increased strength due to the Ni content. Supplied in the hardened and tempered condition.

Size Range:
Rd 7.94mm- 260mm
Sq 300mm

Other sizes available on request.

EN26    

W-Nr 1.6745, AS X9940, BS 970 826 M 40   
21/2% Ni Cr Mo alloy steel with higher C content. Supplied in the hardened and tempered condition. Higher strength than EN25.

Size Range:
Rd 25mm - 300mm

Other sizes available on request.

4145H    

AISI 4145H Mod.API Spec.7   
45% C Cr Mo alloyed steel normally used in oil field applications.

Size Range:
Rd 90mm - 280mm
Hollow 180/57.15 - 254/76.2

Other sizes available on request


alloy steel aisi 4340 round bar tolerances
alloy steel aisi 4140 round bar tolerances
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alloy steel aisi 4340 round bar weight formula
Round Bar Weight Calculation Formula
Round Bar Weight Formula
0.00623  X ( mm ) Diam X  ( mm ) Diam = Weight / Meter
0.0019  X ( mm ) Diam X  ( mm ) Diam = Weight / Feet
Square Bar Weight Formula

0.00788  X ( mm ) Diam X ( mm ) Diam = Weight / Meter
0.00240  X ( mm ) Diam X  ( mm ) Diam = Weight / Feet

Hexagonal Bar Weight Forumla 
0.00680  X ( mm ) Diam X ( mm ) Diam = Weight / Meter
0.002072  X ( mm ) Width X  ( mm ) Diam = Weight / Feet
Flat Bar Weight Forumla
0.00798  X ( mm ) Thickness X ( mm ) Width = Weight / Meter
0.00243  X ( mm ) Width X  ( mm ) Thickness = Weight / Feet

 

aisi 4340 round bar Typical applications include:
  • Screw machine products
  • Gears
  • Bearings
  • Fasteners
  • Fittings
  • Mining machinery
  • Food processing equipment
  • Shafts
  • Instruments
  • Screws
  • Valves
  • Aircraft parts, exhaust manifolds
  • Pump
 
Check 4340 heat treated bar wall thickness, dimensions & pressure rating