Latest Steel Sncm220 20CrNiMo 21nicrmo2 1.6523 8620 20crnimoa Steel Square Bar for Construction

• 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.: SNCM220 20CrNiMo 21NiCrMo2 1.6523 8620 20CrNiMoA
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Automobiles, Agriculture, Construction, Motorcycle
• Processing Technology: Turned and Polished or Cold Drawn Condition
• Tolerance: H9 or Higher
• Surface of Peeled Steel: Bright
• Cutting Pieces Tolerance: -0.1/+0.1mm
• 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

 

1.6523 SNCM220/20CrNiMoA/20NiCrMo2/20NiCrMoS2/8615/8617/8620/8622
component	C	Si	Mn	P	S	Cr	Ni	Mo
minimum value	0.17	-	0.65	-	-	0.4	0.4	0.15
Maximum value	0.23	0.4	0.95	0.035	0.035	0.7	0.7	0.25

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

 

Approximate comparison table

GB	ISC	CNS	JIS	KS	ASTM/AISI	UNS	ISO	DIN EN/DIN	W-Nr.
20CrNiMo	A50202	SNCM220	SNCM220	SNCM220	8620	G86200	20NiCrMo2	21NiCrMo2	1.6523

Product Parameters

 

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

condition	Heat treatment or condition	tensile strength σb  Mpa	Reduction of area ψ  %
Hot rolled bar and wire	Spheroidizing annealing (GKZ) or spheroidizing annealing (GKZ)+peeling (SH)	≤460	≥65
Pulling products	Cold drawing (K)+spheroidizing annealing (GKZ)	≤460	≥65
Pulling products	Cold drawing (K)+spheroidizing annealing (GKZ)+finishing (K)	≤490	≥65

	main features	application
20CrNiMo	20CrNiMo steel is originally the steel grade 8720 in American AISI and SAE standards. The hardenability is similar to that of 20CrNi steel. Although the content of Ni in steel is half of that of 20CrNi steel, the upper part of the isothermal transformation curve of austenite moves to the right due to the addition of a small amount of Mo; also Due to the proper increase of Mn content, the hardenability of this steel is still very good, and its strength is also higher than that of 20CrNi steel	It is often used to manufacture gears in engines and transmission systems of small and medium-sized cars and tractors; It can also replace the manufacturing requirements of 12CrNi3 steel Carburized parts and cyanided parts with high core performance, such as the jaw and cone body of the cone bit used in petroleum drilling and metallurgical open-pit mines
40CrNiMoA	It has high strength, high toughness and good hardenability. When it is hardened to semi-martensitic hardness (HRC45), the critical hardenability diameter of water quenching is ¢ ≥ 100mm, and the critical hardenability diameter of oil quenching is ¢ ≥ 75mm; When hardening to 90% martensite, the critical diameter of water quenching is ≯ 80-90mm, and the critical diameter of oil quenching is ¢ 55-66mm. This steel has stability against overheating, but it has high self-point sensitivity, temper brittleness, and poor weldability. It needs to be preheated at high temperature before welding, and stress relief treatment after welding	It is used after quenching and tempering to make important parts requiring good plasticity, high strength and large size, such as shafts with high load in heavy machinery Class II, turbine shaft, blade, high-load transmission parts, fasteners, crankshaft, gear, etc. with diameter greater than 250mm; It can also be used for rotor shafts and blades with operating temperature over 400 ° C. In addition, this steel can also be used to make special properties after nitriding Important parts required

	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