Good Quality 1566 S65c-Csp 65mn U21653 S70c-Csp 70mn U21703 Sup7 1572 Spring Steel Round Bar Low Price Carbon Steel Round Bar

• Type: Steel Bar
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Carbon Steel
• Technique: Hot Rolled
• Shape: Bar
• Surface Treatment: Blace/Polishing/Oiling or Galvanizing/ etc
• Model NO.: 1566 S65C-CSP 65Mn U21653 S70C-CSP 70Mn U21703 Sup
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Wear-Resistant Steel, Cold Heading Steel, Free-Cut
• Transport Package: Standard Seaworthy Export Packaging or as Required
• Specification: 3000-9000mm
• Trademark: meide
• Origin: Shandong, China
• HS Code: 84802000
• Production Capacity: 1000 Ton/Month

Product Description

About products

Spring steel refers to the steel specially used for manufacturing springs and elastic elements due to its elasticity in the quenching and tempering state. The elasticity of steel depends on its elastic deformation capacity, that is, within the specified range, the elastic deformation capacity makes it bear a certain load, and no permanent deformation occurs after the load is removed. Spring steel shall have excellent comprehensive properties, such as mechanical properties (especially elastic limit, strength limit, yield ratio), anti elastic property (i.e. anti elastic degradation property, also known as anti relaxation property), fatigue property, hardenability, physical and chemical properties (heat resistance, low temperature resistance, oxidation resistance, corrosion resistance, etc.). In order to meet the above performance requirements, spring steel has excellent metallurgical quality (high purity and uniformity), good surface quality (strict control of surface defects and decarburization), and accurate shape and size.

chemical composition

 

Brand	Chemical composition (mass fraction) (%)
	C	Si	Mn	Cr	Ni	Cu
				≤
1016	O.12~O.18	O.17~O.37	O.70~1.00	O.25	O.30	0.25
1022	0.17~O.23	O.17~O.37	O.70~1.00	O.25	0.30	O.25
1026	O.22~O.29	0.17~0.37	O.70~1.00	O.25	O.30	O.25
1033	0.27~O.34	O.17~0.37	0.70~1.00	O.25	O.30	0.25
1037	O.32~O.39	O.17~O.37	O.70~1.00	0.25	O.30	O.25
1039	O.37~0.44	O.17~0.37	O.70~1.00	0.25	0.30	O.25
1046	0.42~0.50	0.17~O.37	0.70~1.00	O.25	O.30	O.25
1053	O.48~0.56	O.17~O.37	O.70~1.00	0.25	0.30	0.25
1062	0.57~0.65	O.17~O.37	0.70~1.00	0.25	0.30	0.25
1066	0.62~0.70	0.17~O.37	O.90~1.20	O.25	0.30	0.25
1572	0.67~O.75	0.17~0.37	0.90~1.20	O.25	O.30	O.2

Product Description

Production Range	Outer Diameter:6-530mm (0.24 inch - 21.18 inch)
	Wall Thickness:0.8-200mm (0.03 inch - 7.89 inch)
Material / Grade	Carbon Steel: GB/T 3094: 10#, 20#, 35#, 45#, 55#, Q235B, Q235C, CF53, A105 ASTM A519: 1010, 1020, 1026, 1035, 1045, 1050 DIN17121/EN 10297-1, DIN1629/DIN2391/EN 10305-1: C10/CK10, C22/CK22, C35/CK35, C45/CK45, CF53 JIS3441/JIS3444/JIS3445: STKM11A, STKM12A/STKM12B/STKM12C, STKM13A/STKM13B/STKM13C JIS G4051: S10C, S20C, S25C, S35C, S45C, S55C
	Alloy Steel: GB/T 3094: 16Mn(Q345B), 20Cr, 40Cr, 15CrMo, 20CrMo, 28CrMo, 30CrMo, 35CrMo, 42CrMo, 20CrMnTi, 40MnMoV, 20Mn2, ZF6, 16MnCr5, 20MnCr5, 38Mn2V, 09CrCuSb(ND) ASTM A519: 5120, 5140, 4130, 4135, 4140 DIN17121/EN 10297-1, DIN1629/DIN2391/EN 10305-1: ST52, EN10084-1998 20Cr4, 41Cr4, 15CrMo4, 25CrMo4, 35CrMo4, 42CrMo4, 16MnCr5 JIS3441/JIS3444/JIS3445: SCM432/SCRRM3, SCM4 JIS G4053: JIS SCr420, JIS SCr440, SCM415, SCM420
Tolerance	Can be customized according to customer's requirements
Technique	Cold Drawn / Cold Rolled
Shape	Triangle, Hexagon, Square, Rectangle, Octagon, Lemon Pipe and Others can be customized
Further Processing for Steel Tubes	Cutting, Chamfer, Threading, Inner diameter or Outer Diameter Lathe, Surface Shot Blasting, Laser Marking

Mechanical properties

Brand	Sample blank size/mm	mechanical property					Hardness of steel delivered HBSl0 / 300 ≤
		Normalizing/quenching/ tempering	ób/MPa	ós/MPa	δ5(%)	Ψ(%)	AKu2/J
			≥				Unheat-treated steel	Annealed steel
1016	25	920/-/-	410	245	26	55	163
1022	25	910/-/-	450	275	24	50	197
1026	25	900/870/600	490	295	22	50	207
1033	25	880/860/600	540	315	20	45	217	187
1037	25	870/850/600	560	335	18	45	229	197
1039	25	860/840/600	590	355	17	45	229	207
1046	25	850/840/600	620	375	15	40	241	217
1053	25	830/830/600	645	390	13	40	255	217
1062	25	810/-/-	695	410	11	35	269	229
1066	25	830/-/-	735	430	9	30	285	229
1572	25	790/-/-	785	450	8	30	285	229

 

Spring is used under impact, vibration or long-term alternating stress, so spring steel is required to have high tensile strength, elastic limit and high fatigue strength. In terms of technology, it is required that the spring steel has certain hardenability, is not easy to decarburize, and has good surface quality. That is, it is a high-quality carbon structural steel with a carbon content of 0.6% - 0.9%. Alloy spring steel is mainly silicon manganese steel, and their carbon content is slightly lower, mainly by increasing silicon content Wsi to improve properties; In addition, there are chromium, tungsten and vanadium alloy spring steels. In recent years, combined with Chinese resources and according to the requirements of new technologies for automobile and tractor design, a new steel grade with boron, niobium, molybdenum and other elements added to the silicon manganese steel has been developed, which extends the service life of the spring and improves the quality of the spring.

Packaging	1. by bundles, each bundle weight under 3 tons, for small outer diameter steel bars, each bundle with 4 - 8 steel strips. 2. after making by bundle, covered with Polyethylene waterproof cloth. 3. make black paints painting on each bar, then make bundles
20 feet container contains dimension	Length under 6000mm
40 feet container contains dimension	Length under 12000mm
By bulk vessel	Freight charge is low by bulk cargo, and large heavy sizes can not be loaded into containers can shipping by bulk cargo

FAQ

1. Who are we?
Our headquarter is located in Shandong, China. Since 2022, we have sold to North America (60.00%), Western Europe (14.00%) and South America (6.00%). There are about 11-50 people in our office.

2. How do we guarantee quality?
Always provide pre-production samples before mass production;
Always carry out final inspection before shipment;

3. What can you buy from us?
Copper, aluminum, die steel, titanium, customized machine parts
4. Why should you buy from us instead of other suppliers?
The company has 25 years of production experience. It has advanced precision production equipment, modern large warehouse, 200000 tons of inventory goods and a number of long-term stable cooperative customers.

5. What services can we provide?
Accepted delivery conditions: FOB, CFR, CIF, EXW
Accepted payment currency: US dollar, Euro, Japanese yen, Canadian dollar, Australian dollar, Hong Kong dollar, British pound, RMB, Swiss franc;
Accepted payment type: T/T, L/C, D/P D/A, PayPal;
Optional ports: Tianjin, Shanghai, Guangzhou;
Spoken: English, Chinese

6. How can we get your price?
A. We need the following information to quote for you:
1).  Product Name
2).  standard
3).  Material grade (chemical composition)
4).  dimension
5).  amount
6).  Special part drawin