Wholesale Hot-Rolled Ms Mechanical Alloy Steel Rod AISI 4140 Scm440 1.7225 42CrMo 4130 SAE1045 1020 Mild Steel Bars

• Type: Alloy Steel Bar
• Standard: AISI, ASTM, GB, JIS, DIN, BS
• Technique: Hot Rolled
• Application: Structural Steel Bar, Tool Steel Bar, Die Steel Bar
• Surface Treatment: Black/Peeling/Polishing/Machining/Grinding/Turning
• Alloy: Alloy
• Model NO.: Aisi 4140 SCM440 1.7225 42CrMo 4130 SAE1045 1020
• Special Use: Mold Steel, Free Cutting Steel, Cold Heading Steel, Tool Steel
• Transport Package: Standard Packaging or Customized
• Specification: 100-12000mm
• Trademark: meide
• Origin: Shandong, China
• HS Code: 72141000
• Production Capacity: 1000 Ton/Month

Product Description

Product Description

Bearing steel is used to make balls, rollers and bearing rings. Bearing steel has high and uniform hardness, wear resistance and high elastic limit. The requirements for the uniformity of chemical composition, the content and distribution of non-metallic inclusions, and the distribution of carbides of bearing steel are very strict. It is one of the most stringent steel grades in all steel production. In 1976, the International Organization for Standardization (ISO) incorporated some general bearing steel grades into the international standards, and divided the bearing steel into four types, namely, fully hardened bearing steel, surface hardened bearing steel, stainless bearing steel, and high temperature bearing steel, with 17 steel grades.

chemical composition

composition	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
Q195	≤0.12	≤0.3	≤0.5	≤0.035	≤0.04	≤0.3	≤0.3	≤0.3	-
Q235	≤0.22	≤0.35	≤1.4	≤0.045	≤0.5	≤0.3	≤0.3	≤0.3	-
Q345	≤0.2	≤0.5	≤17	≤.035	≤0.0335	≤0.3	≤0.5	≤0.3	-
Q390	≤0.2	≤0.5	≤1.7	≤0.035	≤0.035	≤0.3	≤0.5	≤0.3	≤0.1
10#	0.07-0.13	0.17-0.37	0.35-0.65	≤0.035	≤0.03	≤0.15	≤0.3	≤0.3	-
15#	0.12-0.18	0.17-0.37	0.35-0.65	≤0.035	≤0.03	≤0.2	≤0.3	≤0.25	-
20#	0.17-0.23	0.17-0.37	0.35-0.65	≤0.035	≤0.035	≤0.25	≤0.3	≤0.25	-
25#	0.22-0.29	0.17-0.37	0.5-0.8	≤0.035	≤0.035	≤0.25	≤0.3	≤0.25	-
30#	0.27-0.34	0.17-0.37	0.5-0.8	≤0.035	≤0.035	≤0.25	≤0.3	≤0.25	-
35#	≤0.17	≤0.35	≤1.4	≤0.04	≤0.04	≤0.3	≤0.3	≤0.3	-
40#	0.37-0.44	0.17-0.37	0.5-0.8	≤0.035	≤0.035	≤0.25	≤0.3	≤0.25	-
45#	0.42-0.5	0.17-0.37	0.5-0.8	≤0.035	≤0.035	≤0.25	≤0.3	≤0.25	-
55#	0.52-0.6	0.17-0.37	0.5-0.8	≤0.035	≤0.035	≤0.25	≤0.3	≤0.25	-
16Mn	0.13-0.2	0.2-0.6	1.2-1.6	≤0.025	≤0.01	≤0.3	≤0.3	≤0.2
20Cr	0.18-0.24	0.17-0.37	0.5-0.8	≤0.035	≤0.035	0.7-1	≤0.3	≤0.3	≤0.15
40Cr	0.37-0.44	0.17-0.37	0.5-0.8	≤0.035	≤0.035	0.8-1.1	≤0.3	≤0.3	≤0.15
15CrMo	0.12-0.18	0.17-0.37	0.4-0.7	≤0.035	≤0.035	0.8-1.1	≤0.3	≤0.3	0.4-0.55
20CrMo	0.17-0.24	0.17-0.37	0.4-0.7	≤0.035	≤0.035	0.8-1.1	≤0.3	≤0.3	0.15-0 .25
30CrMo/4130/SCM420/25CrMo4/1.7218	0.26-0.34	0.17-0.37	0.4-0.7	≤0.035	≤0.035	0.8-1.1	≤0.3	≤0.3	0.15-0.25
35CrMo	0.32-0.4	0.17-0.37	0.4-0.7	≤0.035	≤0.035	0.8-1.1	≤0.3	≤0.3	0.15-0.25
42CrMo/4140	0.38-0.45	0.17-0.37	0.5-0.8	≤0.035	≤0.035	0.9-1.2	≤0.3	≤0.3	0.15-0.25
5120	0.17-0.22	0.15-0.35	0.7-0.9	≤0.035	≤0.035	0.7-0.9	≤0.25	≤0.35	≤0.06

 

Product Parameters

Material Science:	Hot rolled/cold drawn/forged steel round steel
Process:	It is forged from vacuum degassed steel ingot.
Diameter:	25mm - 1000mm (optional)
Length:	1000mm-12000mm Straightness:3mm/M max(optional)
Process:	EAF+LF+VD+forging+heat treatment (optional)
Delivery conditions:	Hot forging+rough machining (black surface after Q/T)+double tempering.
Delivery time	15-25 days
Minimum order quantity:	5 tons
Heat treatment:	Normalizing/annealing/quenching/tempering (optional)
Technical data:	Chemical composition, physical properties and mechanical tests according to customer requirements
characteristic:	According to your requirements
Test:	Ultrasonic test according to SEP 1921-84 C/c and D/d (optional)
Tag:	Grade, heat resistant NO The length will be printed with the required color on each bar
Payment:	T T 30% in advance; The balance shall be paid against shipping documents or irrevocable letter of credit at sight before shipment
Terms of trade	FOB,C&F,EXW...

mechanical behavior

Product form	Heat treatment or status	hardness HBW
Hot rolled steel plate (Baosteel)	hot-rolling	HV ≤300
	anneal	HV ≤180
	Water quenching 800~880 ºC	HRC ≥47
	Oil quenching 830~890 ºC	HRC ≥45

feature

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

Application

Bearing steel is the steel used for manufacturing balls, rollers and sleeves of rolling bearings, and also can be used for manufacturing precision measuring tools, cold dies, machine tool lead screws, such as dies, measuring tools, taps and precision accessories of diesel engine oil pumps. Bearing steel is used to make balls, rollers and bearing rings.

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 drawing