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4140 Carbon Steel Round Bar

1. Competitive price and quality from our own factory
2. Approved by ISO9001, CE, SGS every year
3. Best service with 24 hour's reply
4. Flexible payment with T/T,L/C
5. Smooth production ability(50000tons/month)
6. Quick delivery and standard exporting package
7. OEM/ODM

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Model:
As customers' demands
Brand:
Hongguan

Product Description

4140 Carbon Steel Round Bar Manufacturer & Supplier

4140 steel round bar is a 1% chromium-molybdenum medium hardness general purpose high strength steel, typically offered hardened and tempered in the 850-1000 MPa (T-state) tensile range. 4140 now offers improved machinability, which greatly increases feeds and/or speeds, while also extending tool life without compromising mechanical properties.

4140 is used in a wide range of applications in most industrial sectors, such as. Adapters, arms, shafts, bolts, crankshafts, connecting rods, chuck bodies, collets, conveyor pins and rollers, injector pins, forks, gears, guide rods, hydraulic shafts and parts, lathe spindles. Logging parts, milling spindles, motor shafts, nuts, clamping rods, various pins, pinions, pump shafts, rams, sleeves, spindles, sprockets, studs, tool holders, torsion bars, worms, etc. .

4140 Carbon Steel Round Bar Description

Product Name	4140 Carbon Steel Bar/Rod
Carbon structure steel	Q195, Q215, Q235, Q275
Low alloy high strength structure steel	Q295, Q345, Q390, Q420, Q460
Prime Carbon structure steel	10#, 20#, 35#, 45#, 60#, 20Mn, 65Mn, B2, B3, JM20, SH45,S45C, C45 1015 1020 1025 1030 1035 1045 1050
Outer diameter	0.8mm-500mm
Technology	hot rolled/cold rolled/cold drawn/forged
Length	1-12m/customized
Other sections	Angle bar/Square bar/Flat bar/Flat bar
Standard	GB/T799,ASTM A29,A108,A321,A575,BS970,DIN1652,JIS G4051
Surface	Black painted,galvanized
Advantages	High strength, good weldability, good machining performance, good corrosion resistance
Shipment time	7-15 days subject to the clients' requirement and quantity

Main materials we can supply

USA	Japan	Germany		U.K.		France	Italy	Spain	Sweden	China
AISI/SAE	JIS	W‐nr.	DIN	BS	EN	AFNOR	UNI	UNE	SS
A570.36	STKM 12A	1.0038	RSt.37‐2	4360	‐	E 24‐2	‐	‐	1311	15
	STKM 12C			40 C		Ne
1015	‐	1.0401	C15	080M15	‐	CC12	C15, C16	F.111	1350	15
1020	‐	1.0402	C22	050A20	2C	CC20	C20, C21	F.112	1450	20
1213	SUM22	1.0715	9SMn28	230M07	1A	S250	CF9SMn28	F.2111	1912	Y15
1213	SUM22	1.0715	9SMn28	230M07	1A	S250	CF9SMn28	11SMn28	1912	Y15
								11SMn28
12L13	SUM22L	1.0718	9SMnPb28	‐	‐	S250Pb	CF9SMnPb28	11SMnPb28	1914	‐
‐	‐	1.0722	10SPb20	‐	‐	10PbF2	CF10Pb20	10SPb20	‐	‐
1215	‐	1.0736	9SMn36	240M07	1B	S300	CF9SMn36	12SMn35	‐	Y13
12L14	‐	1.0737	9SMnPb36	‐	‐	S300PB	CF9SMnPb36	12SMnP35	1926	‐
1015	S15C	1.1141	Ck15	080M15	32C	XC12	C16	C15K	1370	15
1025	S25C	1.1158	Ck25	‐	‐	‐	‐	‐	‐	25
A572‐60	‐	1.89	StE380	4360 55	‐	‐	FeE390KG	‐	2145	‐
				E
1035	‐	1.0501	C35	060A35	‐	CC35	C35	F.113	1550	35
1045	‐	1.0503	C45	080M46	‐	CC45	C45	F.114	1650	45
1140	‐	1.0726	35S20	212M36	8M	35MF4	‐	F210G	1957	‐
1039	‐	1.1157	40Mn4	150M36	15	35M5	‐	‐	‐	40Mn
1335	SMn438(H)	1.1167	36Mn5	‐	‐	40M5	‐	36Mn5	2120	35Mn2
1330	SCMn1	1.117	28Mn6	150M28	14A	20M5	C28Mn	‐	‐	30Mn
1035	S35C	1.1183	Cf35	060A35	‐	XC38TS	C36	‐	1572	35Mn
1045	S45C	1.1191	Ck45	080M46	‐	XC42	C45	C45K	1672	Ck45
1050	S50C	1.1213	Cf53	060A52	‐	XC48TS	C53	‐	1674	50
1055	‐	1.0535	C55	070M55	9	‐	C55	‐	1655	55
1060	‐	1.0601	C60	080A62	43D	CC55	C60	‐	‐	60
1055	S55C	1.1203	Ck55	070M55	‐	XC55	C50	C55K	‐	55
1060	S58C	1.1221	Ck60	080A62	43D	XC60	C60	‐	1678	60Mn
1095	‐	1.1274	Ck101	060A96	‐	XC100	‐	F.5117	1870	‐
W1	SK3	1.1545	C105W1	BW1A	‐	Y105	C36KU	F.5118	1880	‐
W210	SUP4	1.1545	C105W1	BW2	‐	Y120	C120KU	F.515	2900	‐

4140 Carbon Steel Round Bars Chemical Composition

Min. %	Max %
Carbon	0.36	0.44
Silicon	0.1	0.4
Manganese	0.65	1.1
Chromium	0.75	1.2
Molybdenum	0.15	0.35
Phosphorous	0	0.04
Sulphur	0	0.04

4140 Carbon Steel Round Bars Mechanical Properties

Mechanical Property Designation		R	S	S	*T	U	V	W
Limited Ruling Section mm		250	250	150	100	63	30	20
Tensile Strength Mpa	Min	700	770	770	850	930	1000	1080
Tensile Strength Mpa	Max	850	930	930	1000	1080	1150	1230
0.2% Proof Stress Mpa	Min	480	540	570	655	740	835	925
Elongation on	Min	15	13	15	13	12	12	12
5.65√S0 %	Min	15	13	15	13	12	12	12
Izod Impact J	Min	34	27	54	54	47	47	40
Charpy Impact J	Min	28	22	50	50	42	42	35
Hardness Brinell HB	Min	201	233	233	248	269	293	311
Hardness Brinell HB	Max	255	277	277	302	331	352	375
*Material stocked generally in condition T
Check test certificate if critical for end use.