4340 Round Bar

View SAE 4340 threaded rod Price Chart, Manufacturer of Alloy steel 4340 hex bar

Alloy steel is used to manufacture a wide variety of products. It consists of different elements that help in increasing hardness, strength, and wear resistance. 4340 Round Bar is one such category that can be machined in all states other than hardened stade. It is easy to weld them as well. They are used in heavy duty, aerospace, and automotive industries due to the quality of toughness displayed by them. 4340 chrome moly steel rods are also said to have high ductility and high strength. They are widely used in industrial applications as they provide strength and hardenability that other steel grades do not provide.

4340 Round Bar

SAE 4340 threaded rod

Alloy steel 4340 hex bar

Check availibility of 4340 Alloy steel Square, Rectangular, Bright bar stock in Hairline Finished

4340 alloy steel flat bar has good impact resistance and wears resistance in hardened conditions. The size range of these bars lies between ½ inches to 15 inches and are used in applications such as axle shaft, heavy-duty shaft, and mine drilling. 4340 square bar offers a reduction area of 35 to 45 %. It has a higher carbon content which gives the bar rigidity and heat treatment capabilities. Moreover, these 4340 Alloy Steel hex bars also display inferior weldability and an excellent response to quench. The bars produced by us at times have a small amount of vanadium which helps in enhancing the strength. They are available in 5 mm to 500 mm diameter.

Grade 4340 Annealed rectangular bar has a melting range of 1340 degrees C- 1380 degrees C. The iron based alloy used in it is immune to embrittlement. They are available in the size range of 30 mm to 160 mm. These AISI 4340 drill rods are tempered to ensure that they do not become brittle and at times quenched to confirm the hardness. The physical properties of this depend upon how long the product was tempered and how much.

Don't forget to check 4340 Chrome moly steel Hex Rod Dimensions Chart, 34crnimo6 Round Bar cutting to 650mm Suppliers in Mumbai

4340 Round Bar Specification

Sizes	2-100mm A/F
Tolerance	H9, H8, H10, K12, H13K9, K10, H11, H12, K11
Round bar Sizes	Diameter: 3-~800mm
Technique	Hot Rolled, Cold Drawn, Cold Rolled, Forged, Rod
Processing	Bar cutting to 650mm
Surface	Bright, Hot Rolled Pickled, Sand Blasting Finished, Hairline, Cold Drawn, Polished suppliers
Condition	Hardened and tempered, annealed
Form	Precision Square, Ingot, T-Bar, Rod, Round, Welding Rod, I/H Bar, Flat Bar, Blocks, Rings, Rectangle, Hex (A/F), Hollow, Threaded, Profiles, Ground Bar, Channel Bar, Billet, Triangle, Round Rod, Half Round Bar, Forging etc.
Square bar Sizes	4 to 100mm
Finish	Hot rolled annealed, Bright, smooth turned, Polish, Rough Turned, Cold (bright) drawn, centreless ground, Grinding, peeled, hot rolled, slit rolled edge, Centreless Ground & Black.
Quick Delivery is available in the following cities	Manama, London, Riyadh, Nagpur, Montreal, Istanbul, Howrah, Kolkata, Pimpri-Chinchwad, Perth, Bogota, Courbevoie, Kuwait, Kanpur, Baroda, Port-of-Spain, Gimhae-si, Chennai, Mexico, New Delhi, Gujarat, Ahmedabad, Lagos, Surat, India, Ranchi, Bangalore, Ahvaz, Karachi, Indore, Muscat, Janeiro, Noida, Thiruvananthapuram, Hyderabad, Santiago, Vadodara, Ankara, Abu Dhabi, Caracas, Calgary, Melbourne, Tehran, Khobar, Rajkot, Tau, Gurgaon, Dammam, Ludhiana, Mumbai, Ernakulam, Bengaluru, Ludhiana, Sydney, Jamshedpur, Coimbatore
Flat bar Sizes	Width: 10 - 500 millimeter Thick.: 2 to 100 millimeter

Composition Standard of SAE 4340 threaded rod

	C	Mn	Si	S	P	Cr	Ni	Mo
SAE - 4340	.38- .43	.60 - .80	.15 - .35	.035 MAX	.040 MAX	.70 - .90	1.65 -2.00	.20 - .30

Exporter of Low Alloy steel 4340 Polished Bar, We Supply UNS G43400 Black Bar in Hardened and tempered condition

Mechanical Strength of Alloy steel 4340 hex bar

Tensile strength kgf/mm²	Yield strength kgf/mm²	Elongation %	Cross section reduction rate %	Impact value	Hardness Hb
≧100	≧90	≧16	≧45	≧7	293~352

4340 alloy steel flat bar Equivalent Material

Standard	AISI / SAE 4340
UNS	-
WERKSTOFF NR.	34CrNiMo6, 40NiCrMo8-4
BS 970	817M40, En24
UNI	35NiCrMo6 (KB), 40NiCrMo7 (KB)
JIS	SNCM 447, SNB24-1-5
EN name	34CrNiMo6
EN #	1.6582, 1.6562

4340 chrome moly steel rod Surface Finish

CG	Centreless ground	HF	Hot finished
PR	Peeled and reeled	CF	Cold finished
SRE	Slit rolled edge	P&T	Peeled and turned
CD	Cold drawn	P	Polished
BD	Bright drawn	ST	Smooth turned
HRAP	Hot rolled annealed and pickled	RT	Rough turned/peeled

Know 34crnimo6 AISI 4340 Cold Drawn Round Bar Chemical Structure, Alloy 4340 Rod Manufacturer in India

Available of HR 4340 Alloy Steel Round Bars Types

Grade 4340 Rectangular Bar Surface Finish

CF	Cold finished	CD	Cold drawn
ST	Smooth turned	CG	Centreless ground
P&T	Peeled and turned	P	Polished
SRE	Slit rolled edge	BD	Bright drawn
RT	Rough turned/peeled	PR	Peeled and reeled
HRAP	Hot rolled annealed and pickled	HF	Hot finished

Alloy Steel 4340 Flat Bar Applications

• Power Transmission Gears
• Pharmaceuticals
• Aircraft Landing Gear
• Petrochemicals
• Structural Use

4340 Ht Round Bar Size Chart

Types	SIZES (Millimeter)	SIZES (In)	Tolerance (ISO)
Cold Drawn and Ground	10.00 – 75.00	5/6" – 2.50"	h8-h9-h10-h11
Peeled and Ground	20.00 – 50.00	3/4″ – 2.00"	h9-h10-h11
Peeled and Polished	40.00 – 150.00	1.50" – 6.00"	h11, h11-DIN 1013
Cold Drawn and Polish	3.00 – 75.00	1/8" – 3.00"	h8-h9-h10-h11

Marking on 4340 Annealed Round Bar

• Material Designation
• "WP" in grade symbol
• Schedule no. or minimal wall thickness
• Rating Designation
• Manufacturer’s Symbol or Name
• Grade
• Heat Code

Physical Characteristics of 4340 Shaft Material

Melting Point (°F)	2600
Density (LB/IN 3)	0.292
Melting Point (°C)	1425
Density (G/CM 3)	8.08

AS 4340 Hollow Bar Tolerances

Form	Size(mm)	Process	Tolerance
Round	Φ6-Φ100	Cold Drawn	Bright/Black	Best H11
	Φ16-Φ350	Hot Rolled	Black	-0/+1mm
			Peeled/ground	Best H11
	Φ90-Φ1000	Hot Forged	Black	-0/+5mm
			Rough Turned	-0/+3mm
Flat/Square/Block	Thickness :120-800	Hot Forged	Black	-0/+8mm
	Width:120-1500		Rough Machined	-0/+3mm

Condition of Alloy Steel 4340 Rod

ANN	Annealed
H&T	Hardened and tempered.
PH	Precipitation hardened.

Supplier of 4340 Alloy Steel Bar in Standard Weights

Size (inch.)	Wght / Foot (lbs) 4340 Round Bar Suppliers
1/4"	00.167
5/16"	00.261
3/8"	00.376
7/16"	00.511
1/2"	00.668
9/16"	00.845
5/8"	1.043
11/16"	1.262
3/4"	1.502
13/16"	1.763
7/8"	2.045
15/16"	2.347
1"	2.670
1 1/16"	3.015
1 1/8"	3.380
1 3/16"	3.766
1 1/4"	4.172
1 5/16"	4.600
1 3/8"	5.049
1 7/16"	5.518
1 1/2"	6.008
1 9/16"	6.519
1 5/8"	7.051
1 3/4"	8.178
1 7/8"	9.388
1 15/16"	10.020
2"	10.680
2 1/8"	12.060
2 1/4"	13.520
2 3/8"	15.060
2 7/16"	15.870
2 1/2"	16.690
2 5/8"	18.400
2 3/4"	21.130
2 7/8"	22.070
3"	25.050
3 1/4"	29.300
3 1/2"	33.890
3 3/4"	38.810
4"	44.070
4 1/4"	48.230
4 3/8"	51.110
4 1/2"	55.590

Alloy Steel Bar 4340 High Temperature Properties

For tempered and quenched heavy forgings
Diameter mm	Yield strength MPa
	20 ℃	100 ℃	200 ℃	250 ℃	300 ℃	350℃	400℃
≤250	590	549	510	481	441	412	371
250-500	540	505	471	451	412	383	353
500-750	490	466	441	422	392	363	343

4340 Steel Bar Price List

Product	Price
AISI 4340 Rod Bar 6-1/4 Dia X 1.2 Mtr Long	$249.15/ Unit
Alloy Steel Bright Round Bars, (Grade :-AISI- 4340), (Length : 5.8 - 6.0 Meters)	$0.70/ Kilogram
Alloy 4340 Size Square Corner 35mm Thickness 45.00 mm Width (Square Corner Steel Bar)	$8.94/ Kilogram
80 mm Round Bar, ASTM A29, 4340 (Alloysteel)	$128.12/ Piece

Many Grade 4340 Solid Bar suppliers, retailers, stockholders, distributors, exporters, dealers, stockists, wholesalers, and importers find your sizes in our stock of AS 4340 Hr Bar in Mumbai, Choose us for the best price of 4340 Alloy Steel Grade Hexagonal Bar in India, Contact for a Quick Quote!

SAE 4340 Forged Bar Thermal Properties

Thermal Expension	Thermal Conductivity
12.3 um/m°C	44.5 W/mK

Thickness Chart of AISI 4340 Steel Hex Bar

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

SAE 4340 Square Bar Weights

Width or Dia.(millimetre)	Wght / m		Sectional Area		Perimeter
	Round (kilogram)	Square (kilogram)	Round (centimetre²)	Square (centimetre²)	Round (centimeter)	Square (centimeter)
5.0	0.15	0.20	0.20	0.25	1.57	2.0
5.5	0.19	0.24	0.24	0.30	1.78	2.2
6.0	0.22	0.28	0.28	0.36	1.88	2.4
7.0	0.30	0.38	0.38	0.49	2.20	2.8
8.0	0.39	0.50	0.50	0.64	2.51	3.2
9.0	0.50	0.64	0.64	0.81	2.83	3.6
10	0.63	0.73	0.79	1.00	3.14	4.0
11	0.75	0.95	0.95	1.21	3.46	4.4
12	0.89	1.13	1.13	1.44	3.77	4.8
14	1.21	1.54	1.54	1.96	4.40	5.6
16	1.58	2.01	2.01	2.56	5.03	6.4
18	2.00	2.54	2.54	3.24	5.65	7.2
20	2.47	3.14	3.14	4.00	6.28	8.0
22	2.98	3.80	3.80	4.84	6.91	8.8
25	3.85	4.91	4.91	6.25	7.85	10.0
28	4.83	6.15	6.16	7.84	8.80	11.2
32	6.31	8.04	8.04	10.24	10.05	12.8
36	7.99	10.17	10.18	12.96	11.31	14.4
40	9.86	12.56	12.57	16.00	12.57	16.0
45	12.49	15.90	15.90	20.25	14.14	18.0
50	15.41	19.62	19.64	25.00	15.71	20.0
56	19.34	24.62	24.63	31.36	17.59	22.4
63	24.47	31.16	31.17	36.69	19.79	25.2
71	31.08	39.57	39.59	50.41	22.31	28.4
80	39.46	50.24	50.27	64.00	25.13	32.0

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4340 Cold drawn steel round bars	Gurgaon, Malaysia, Singapore, NY 12203 (USA), South Korea
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