Steel Tube ASTM 9260 60si2mn 60si2mna 60si7 1.0909 Alloy Steel Tube Pipe Is Used for Damping Plate Spring and Coil Spring of Locomotive

• Type: Seamless
• Technique: Hot Rolled
• Material: Carbon Steel
• 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
• Model NO.: ASTM 9260 60Si2Mn 60Si2MnA 60Si7 1.0909
• 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 9260 silicon and manganese improve the elastic strength and strength ratio, improve hardenability, anti-tempering stability and anti-relaxation stability, overheating sensitivity is also small, but the decarbonization tendency is larger, especially when the content of silicon and carbon is higher, carbon is easy to graphitize, make the steel brittle. ASTM9255 is used for damping plate springs and coil springs on automobiles, tractors and locomotives, cylinder safety valve springs, and can also be used as heat resistant springs below 250ºC.

Chemical Composition (%)

Material	C	Si	Mn	P	S	Cr	Ni	CU
27MnSi5	0.24-0.32	1.10-1.40	1.10-1.40	0.035	0.035	0.30	0.30	0.30
37MnSi5	0.32-0.4	1.10-1.40	1.10-1.40	0.035	0.035	0.30	0.30	0.30
46MnSi4	0.39-0.45	1.10-1.40	1.10-1.40	0.035	0.035	0.30	0.30	0.30
9260	0.56-0.64	1.8-2.2	0.75-1	0.035	0.04	0.2	0.25	0.35
9255	0.51-0.59	1.8-2.2	0.7-0.95	0.035	0.04	0.2	0.25	0.35

Mechanical property

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
27MnSi5	d=25	Quenching + tempering	≥980	≥835	≥12	≥40	≤217	≥39
37MnSi5	d=25	Quenching + tempering	≥885	≥735	≥15	≥45	≤229	≥47
46MnSi4	d=25	Quenching + tempering	≥885	≥735	≥15	≥40	≤229	≥47
Material	Sample size	Tensile strength σb (MPa)	Yield strength σs (MPa)	Elongation δ10 (%)	Hot rolled	Shrinkage of section ψ (%)	Cold drawing + heat treatment
9255	15mm	≥1274(130)	≥1176(120)	≥6	≤302HB	≥30	≤321HB
9260	15mm	≥1274(130)	≥1176(120)	≥5	≤321HB	≥25	≤321HB

Heat Treatment

Heat treatment specification.
9260 heat treatment methods include isothermal tempering and fractional quenching, subtemperature quenching, high temperature tempering, deformation heat treatment process. This method can effectively improve the strength, toughness and service life of 60Si2Mn spring steel.
Quenching 870ºC±20ºC, oil cold; Temper 480ºC±50ºC(for special needs,±30ºC).
Heat treatment technology.
Spheroidizing annealing: The ideal spheroidizing structure can be obtained by 850 ° C heating, oil cold quenching, short time isothermal spheroidizing process (790 ° C heating 25Min, rapid cooling to 680 ° C heat preservation 1H, furnace cooling to 500 ° C heat extraction). The normal quenching temperature of 60Si2Mn steel is 850 degrees ~870 degrees, and the oil is cold. Tempering temperature depends on the hardness requirements of die parts, such as 400 degrees tempering, hardness 46HRC; 500 degrees tempering, hardness 40HRC; 600 degrees temper, hardness 34HRC. In 150~160 degrees of tempering performance to get the best match, attention must avoid 300 degrees of tempering brittle area. The requirements of high toughness of the mold, the requirements of good dimensional stability of measuring tools, tempering temperature can be raised to about 250 degrees, hardness of 55~60HRC, has better toughness. AC1-755, Ac3=810, Ar1=700,Ar3=770,Ms-300 ~ 305, Annealing: 750C- furnace cooling -HBS≤222 Normalizing: 830 ~ 860C- Air cooling -HBS≤302 Quenching: 870C-oil-HRC> 61 Hardness of tempered at different temperatures HRC: 150C-61,200 C-60, 300C-56, 400 C-51,500 C-43, 550C-38, 600C-33, 650C-29 Commonly used tempering temperature 430 ~ 480C, water or air, HRC45 ~ 50 The following are the parameters of automobile leaf spring heat treatment Quenching heating holding time is related to thickness: mm/min, 6.5/2, 8/3, 8.5-10/4, 12/5 Tempering holding time is related to thickness: mm/min, < 10/25-30, 10-15 30-35, 15-20/40-45, 20-25/45-50.
Metallographic structure.
Tempered tretinite.
Delivery status.
Hot-rolled steels are delivered in heat-treated or non-heat-treated condition and cold-drawn steels are delivered in heat-treated condition. Hot rolled delivery specifications: 2.0~18.0mm, annealed and non annealed state. Cold rolled delivery specification: 0.3~4.3mm,

Product specification

DN	OD		ASTM A53 / API 5L / ASTM A795			BS1387 / EN10255
			SCH10S	STD SCH40	SCH80	Light	Medium	Heavy
	MM	INCH	MM	MM	MM	MM	MM	MM
15	21.3	1/2"	2.11	2.77	3.73	2	2.6	-
20	26.7	3/4"	2.11	2.87	3.91	2.3	2.6	3.2
25	33.4	1"	2.77	3.38	4.55	2.6	3.2	4
32	42.2	1-1/4"	2.77	3.56	4.85	2.6	3.2	4
40	48.3	1-1/2"	2.77	3.68	5.08	2.9	3.2	4
50	60.3	2"	2.77	3.91	5.54	2.9	3.6	4.5
65	73 or 76	2-1/2"	3.05	5.16	7.01	3.2	3.6	4.5
80	88.9	3"	3.05	5.49	7.62	3.2	4	5
90	101.6	3-1/2"	3.05	5.74	8.08
100	114.3	4"	3.05	6.02	8.56	3.6	4.5	5.4
125	141.3	5"	3.4	6.55	9.53		5	5.4
150	168.3	6"	3.4	7.11	10.97		5	5.4
200	219.1	8"	3.76	8.18	12.7
250	273.1	10"	4.19	9.27	15.09

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