Hot Rolled Thick Wall Steel Pipe 5120 SCR420 20cr4 20cr Carbon Steel Alloy Round Tube Stiffness for Machine Tool Change Gears

• Customization: Available
• Type: Seamless
• Technique: Hot Rolled
• Model NO.: 5120 SCr420 20Cr4 20Cr
• Surface Treatment: Black
• Usage: Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Invoicing: by Actual Weight
• Thickness: 4mm-150mm
• Length: 12m
• Tolerance: ±5%, ±1%
• Oiled or Non-Oiled: Non-Oiled
• Delivery Time: 7-20 Days
• Product Name: Seamless Alloy Steel Tube/Pipe
• Transport Package: Customized or Regular Shipping According to Custom
• Specification: OD 4-2420MM
• Trademark: MEIDE
• Origin: Shandong, China
• HS Code: 7304319000
• Production Capacity: 200000 Ton/Tons Per Month

Product Description

Product Description

ASTM 5120 GB 16CrMnH is a carburized steel with good properties, high hardenability, and hard and wear-resistant surface and tough core after carburizing and quenching. The carburized steel is usually a low carbon steel with a carbon content of 0.17% - 0.24%. Transmission gears are mostly made of it in automobiles. It is medium hardenable carburized steel and medium Cr Mn Ti steel. Its hardenability is high. Under the condition of ensuring hardenability, it has high impact toughness at low temperature. 20CrMnTi steel for surface carburizing and hardening treatment. Good workability, small machining deformation and good fatigue resistance.  The main uses are: for shafts, piston parts and various special parts of automobiles and airplanes.

Chemical Composition (%)

20CrMnTi 5115 SMnC420H 5120 20MnCr5 1.7147 1.8401
component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
minimum value	0.17	0.17	0.8	-	-	1	-	-	-
maximum value	0.23	0.37	1.1	0.035	0.035	1.3	0.3	0.3	0.15

30CrMnTi
component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
minimum value	0.24	0.17	0.8	-	-	1	-	-	-
maximum value	0.32	0.37	1.1	0.035	0.035	1.3	0.3	0.3	0.15

30CrMnTi
component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
minimum value	0.26	0.17	0.8	-	-	1	-	-	-
maximum value	0.32	0.37	1.1	0.025	0.02	1.3	0.3	0.2	0.15

Mechanical property

Thickness (diameter, side length) t mm	Tensile strength σb  Mpa	Yield point σs  Mpa	elongation δ5 %	hardness  HBW	Impact toughness value α kv (J/cm2)	Impact energy Akv (J)
t=15	≥1080(110)	≥835(85)	≥10	≤217HB	≥69(7)	≥55

Heat Treatment

Allowable adjustment range of heat treatment temperature: quenching ± 15 ° C, low temperature tempering ± 20 ° C, high temperature tempering ± 50 ° C
The mechanical properties listed in the table are applicable to the steel with a section size of no more than 80mm. For steel with size greater than 80 to 100 mm, the elongation after fracture, reduction of area and impact absorption energy are allowed to be reduced by 1% (absolute value), 5% (absolute value) and 5% respectively compared with those specified in the table; For steel with size greater than 100 to 150 mm, the elongation after fracture, reduction of area and impact absorption energy are allowed to be reduced by 2% (absolute value), 10% (absolute value) and 10% respectively compared with those specified in the table; For steel with size greater than 150 to 250 mm, the elongation after fracture, reduction of area and impact absorption energy are allowed to be reduced by 3% (absolute value), 15% (absolute value) and 15% respectively compared with those specified in the table;
Boron steel can be normalized before quenching, and the normalizing temperature should not be higher than its quenching temperature. The first quenching of chromium-manganese titanium steel can be replaced by normalizing
During tensile test, no yield can be found on the sample steel and the yield point cannot be measured σ S, the specified residual elongation stress can be measured σ< sub> τ 0.2
he hardness in the table is the value of Brinell hardness HB10/3000 in the steel annealing or high-temperature tempering supply state
Heat treatment system:
The first quenching heating temperature is 880 ° C, the second quenching heating temperature is 870 ° C, oil cooling; Tempering temperature 200 ° C, water and air cooling.

Product material

ALLOY STRUCTURE STEEL
Grade	AISI /ASTM	DIN (W.Nr)	JIS	EN/ BS	GB
5120	5120	1.7027 /21Cr4	SCr420		20Cr
530M40 /5140	530M40 /5140	1.7035 /41Cr4	SCr440		40Cr
5145	5145		Scr445		45CR4
4118	4118	1.7243 /18CrMo4	SCM418 / SCM420		20CrMo
4135	4130	1.7218 /25CrMo4	SCM430	708A25/ 708M25	30CrMo
4140	4140	1.7225 /42CrMo4	SCM440	EN19/ 709M40	42CrMo
4340	4340	1.6582/ 34CrNiMo6	SNCM 439/ SNCM8	EN24/ 817M40	40CrNi2Mo
8620	8620	1.6523/ 21NiCrMo2	SNCM220	805M20	20CrNiMo
CARBON STEEL
20	1020	C22. CK22	S20C	EN3B /070M20	20
35	1035	C35.CK35	S35C		35
45	1045	C45.CK45	S45C	EN8D/C45E	45
50	1050	CK53	S50C	EN9/070M55	50
Q355		S355J /ST52		EN14	Q355
30Mn	1030.1033		S30C		30Mn
30Mn2	1330	30Mn5	SMn433h		30Mn2
STAINLESS STEEL
steel grades: 304, 304L, 316, 316L, 321, 410 430, 431, 2205, 2304, 2507. F53, F55

Product specification

Tolerances
Pipe types	Pipe sizes(mm)	Tolerances
Hot rolled	OD<50	±0.50mm
	OD≥50	±1%
	WT<4	±12.5%
	WT 4~20	+15%, -12.5%
	WT>20	±12.5%
Cold drawn	OD 6~10	±0.20mm
	OD 10~30	±0.40mm
	OD 30~50	±0.45
	OD>50	±1%
	WT≤1	±0.15mm
	WT 1~3	+15%, -10%
	WT >3	+12.5%, -10%

Packaging & Shipping

1. Bundle and pack.
2. Warning for inclined end or flat end or according to buyer's requirements.
3. Marking: According to customer requirements.
4. Apply varnish.
5. Plastic covers at both ends.

FAQ

Q1:who are we?
A:We are based in Shandong, China, start from 2022,sell to North America(60.00%),Western Europe(14.00%),South America(6.00%).
There are total about 11-50 people in our office.

Q2. how can we guarantee quality?
A:Always a pre-production sample before mass production;
Always final Inspection before shipment;

Q3.what can you buy from us?Which ports are accepted for delivery?
A:Copper,Aluminum,Mould steel, Seamless carbon steel,Precision steel pipe,The steel plate,Alloy steel,Titanium,Custom machine parts.It can be delivered from Qingdao, Tianjin, Shanghai, Guangzhou and other ports.

Q4.why should you buy from us not from other suppliers?
A:Shandong Meide Import and Export Co., Ltd. has 25 years of production experience. With advanced precision production equipment
and modern large warehouses, has a stockpile of 200,000 tons of goods, has a number of long-term stable cooperative customers.

Q5.what services can we provide?
A:Accepted Delivery Terms: FOB,CFR,CIF,EXW;
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Accepted Payment Type: T/T,L/C,D/P D/A,PayPal;
Language Spoken:English,Chinese

Q6.Can we get the some samples?Any charges?
A:Yes,you can get available samples in our stock.Free for real samples,but customers need to pay the freight cost.

Q7.How can we get your price ?
A:We need below information to quote for you:
1). Product Name
2). Standard
3). Material Grade (Chemical Composition)
4). Dimension
5). Quantity
6). The Drawing for Special Parts