Carbon Steel/Alloy Steel/Square Steel Hexagonal Flat Steel Rod

• Type: Square Steel, Flat Steel, Hexagonal Steel4
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Alloy Steel
• Technique: Hot Rolled
• Shape: Bar
• Surface Treatment: Blace/Polishing/Galvanizing/ etc
• Model NO.: 5120/5140/4140/4130/4120/5115/
• 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
• Processing Service: Bending, Welding, Decoiling, Punching, Cutting
• Tolerance: ±1%
• Usage: Building, Construction, Maching
• Length: 1000-6000mm, Required
• Transport Package: Standard Seaworthy Export Packaging or as Required
• Specification: 3000-9000mm
• Trademark: Meide
• Origin: Shandong, China
• HS Code: 7215500000
• Production Capacity: 1000 Ton/Month

Product Description

About products

Cold drawn steel refers to the use of cold extrusion technology to pull various high-precision, smooth surface round steel, square steel, flat steel, hexagonal steel, and other special-shaped steel through precise molds.
The concept of cold drawing of steel bars: For the purpose of saving steel and improving the yield strength of steel bars, the method of drawing steel bars with tensile stress exceeding the yield strength but less than the ultimate strength to produce plastic deformation is called cold drawing of steel bars.

chemical composition

 

Material	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
ASTM 5115	0.18	0.37	0.7	0.035	0.035	1	0.3	0.3	0.15
ASTM 5120	0.24	0.37	0.8	0.035	0.035	1	0.3	0.3	0.15
ASTM 5130	0.34	0.37	0.8	0.035	0.035	1.1	0.3	0.3	0.15
ASTM 5140	0.44	0.37	0.8	0.035	0.035	1.1	0.3	0.3	0.15
ASTM 5145	0.49	0.37	0.8	0.035	0.035	1.1	0.3	0.3	0.15
ASTM 4119	0.15	0.37	0.7	0.035	0.035	0.7	0.3	0.3	0.55
ASTM 4130	0.34	0.37	0.7	0.035	0.035	1.1	0.3	0.3	0.25
ASTM 1335	0.38	0.35	1.9	0.035	0.04	0.2	0.25	0.35	0.06
ASTM 4317	0.4	0.37	0.7	0.035	0.035	1.1	0.3	0.3	0.25
ASTM 4140	0.45	0.37	0.8	0.035	0.035	1.2	0.3	0.3	0.25
GB38CrMoAI/JIS SCM645	0.42	0.45	0.6	0.035	0.035	1.65	0.3	0.3	0.25
ASTM 6150	0.54	0.37	0.8	0.025	0.025	1.1	0.3	0.25	0.1
ASTM 4142	0.45	0.37	1.2	0.035	0.035	1.2	0.3	0.3	0.3

Product Description

Commodity	Cold Drawing / Drawn Flat/ Square / Rectangular / Rectangle / Hexagonal / Special Shape Rods Bars
Grades	Carbon steel	SAE 1018 , A36, SS400, S235JR, Q235, SAE 1020, S20C , 1.0402, 20GB, CK22,  SAE 1045 ,S45C, C45, CK45, EN8 ,1.1191
	Alloy steel	SAE 5120 , 20Cr, Scr 420H, 20Cr4, SAE 5140 , 40Cr,SCr440, 520M40,  SAE 4130 , 30CrMo, SCM430, SCM420, SAE 4140 , 42CrMo4, EN19, SCM440,  708A42, 708M40, SAE 4340, 40CrNiMoA,871M40 , SNCM439
Specification	Round Bar	5mm to 100mm
	Square bar	5*5mm to 120*120mm
	Flat bar	5*20mm to 20*100mm
	hex bar	5mm to 120mm
	hexagonal bar	5mm to 120mm (side to side)
Length	4-12m random length or as per request fixed length
Surface	Bright, or dark as per required
Packing	Wrapped by plastic clothes and steel strips
Delivery Condition	BK, BKW, GBK, NBK
Container Size	20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High) 40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High) 40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High)
Application	hardware tools, auto parts, standard parts, fasteners common shaft, machinery manufacturing, light industry, hardware, bicycles, cars, motorcycles, textile machinery, transformers and other machinery industry.
Advantages	greater size accuracy, straightness and increased tensile and yield strength as well as improved machinability
MOQ	1 tons

Theoretical weight table of square steel
Side length (mm)	Cross sectional area (cm2)	Theoretical weight (kg/m)	Side length (mm)	Cross sectional area (cm2)	Theoretical weight (kg/m)
5mm	0.25	0.196	30mm	9.00	7.06
6mm	0.36	0.283	32mm	10.24	8.04
7mm	0.49	0.385	34mm	11.56	9.07
8mm	0.64	0.502	36mm	12.96	10.17
9mm	0.81	0.636	38mm	14.44	11.24
10mm	1.00	0.785	40mm	16.00	12.56
11mm	1.21	0.95	42mm	17.64	13.85
12mm	1.44	1.13	45mm	20.25	15.90
13mm	1.69	1.33	48mm	23.04	18.09
14mm	1.96	1.54	50mm	25.00	19.63
15mm	2.25	1.77	53mm	28.09	22.05
16mm	2.56	2.01	56mm	31.36	24.61
17mm	2.89	2.27	60mm	36.00	28.26
18mm	3.24	2.54	63mm	39.69	31.16
19mm	3.61	2.82	65mm	42.25	33.17
20mm	4.00	3.14	70mm	49.00	38.49
21mm	4.41	3.46	75mm	56.25	44.16
22mm	4.84	3.80	80mm	64.00	50.24
24mm	5.76	4.52	85mm	72.25	56.72
25mm	6.25	4.91	90mm	81.00	63.59
26mm	6.76	5.30	95mm	90.25	70.85
28mm	7.84	6.15	100mm	100.00	78.50

mechanical behavior

 

Material	Diameter of sample d mm	Heat treatment or condition.	Tensile strength σb  Mpa	Point of yield σs  Mpa	Ratio of elongation δ  %	Reduction of section ψ  %	hardness  HBW	Shock absorption energy KV2  J
ASTM 5115 45Cr	d=15	Quenching + tempering	≥735	≥490	≥11	≥45	≤179	≥55
ASTM 5120 20Cr	d=15	Quenching + tempering	≥835	≥540	≥10	≥40	≤179	≥47
ASTM 5130 30Cr	d=25	Quenching + tempering	≥885	≥685	≥11	≥45	≤187	≥47
ASTM 5135 35Cr	d=25	Quenching + tempering	≥930	≥735	≥11	≥45	≤207	≥47
ASTM 5140 40Cr	d=25	Quenching + tempering	≥980	≥785	≥9	≥45	≤207	≥47
ASTM 5145 45Cr	d=25	Quenching + tempering	≥1030	≥835	≥9	≥40	≤217	≥39
ASTM  4119	d=30	Quenching + tempering	≥410	≥265	≥24	≥60	≤179	≥110
ASTM 4130	d=25	Quenching + tempering	≥930	≥785	≥12	≥50	≤229	≥63
ASTM 4317	d=25	Quenching + tempering	≥980	≥835	≥12	≥45	≤229	≥63
ASTM 4140	d=25	Quenching + tempering	≥1080	≥930	≥12	≥45	≤217	≥63
GB38CrMoAI/ JIS SCM645	d=30	Quenching + tempering	≥980	≥835	≥14	≥50	≤229	≥50
ASTM 6150	d=25	Quenching + tempering	≥1280	≥1130	≥10	≥40	≤255	d=25
ASTM 4142	d=25	Quenching + tempering	≥980	≥785	≥10	≥45	≤217	≥63

	main features
20CrMo/A30202/20XM/SCM420/412/20MoCr4/1.7243	It can be used to manufacture high-pressure pipes and various fasteners with non-corrosive media in chemical equipment and working temperature below 250 ° C, nitrogen and hydrogen media, blades, diaphragms, forgings, rolled profiles in steam turbines and boilers, gears, shafts and other important carburized parts in general machines, and can also be used to replace 1Cr13 steel to manufacture working blades of medium-pressure and low-pressure steam turbines at the pressure level of superheated steam zone
30CrMo/A30302/30XM/SCM430 /4130	It is used to manufacture conduits with working temperature below 400 ° C, fasteners with working temperature below 450qC in boilers and steam turbines, nuts and flanges with working temperature below 500 ° C and high pressure, main shafts, shafts, gears, bolts, studs and control wheels with large load in general machinery, high-pressure conduits and weldments with working temperature below 250 ° C in chemical equipment and nitrogen and hydrogen media
35CrMo/A30252/35XM/SCM435/4135/34CrMo4/1.7220	It is used to manufacture important parts in various machines that bear impact, bending and high load. Such as herringbone gear of steel rolling mill, crankshaft, hammer rod, connecting rod, fastener, main shaft and axle of steam turbine engine, engine transmission parts, large electric sleeper shaft, piercer in petroleum machinery, bolts for boiler with working temperature lower than 400 ° C, nuts with working temperature lower than 510 ° C, high-pressure seamless thick-walled pipe in chemical machinery (temperature 450-500 ° C, no corrosive medium), etc., can also replace 40CrNi for manufacturing high load transmission shaft Turbogenerator rotor, large section gear, support shaft (diameter less than 500mm), etc
42CrMo/A30422/38XM/SCM440/4142/4140/42CrMo4/1.7225	It is generally used for manufacturing important parts with higher strength requirements and larger section size than 35CrMo, such as shaft, gear, connecting rod, gearbox gear, supercharger gear, engine cylinder, spring, spring clip, 1200, 2000mm oil drill pipe joint, fishing tool and replacing quenched and tempered steel with higher nickel content

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