253MA Stainless Steel Tube S30815

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253MA Stainless Steel Tube S30815

Phone : +86 531 68656226

Wechat :+86 531 68656226

whatsapp : +86 18560176713

Email : admin@hxssmetal.com

PRODUCT DESCRIPTION

Outside diameter	4mm-200mm
Wall thickness	0.6mm-6.0mm
length	1-6 meters, length can be customized
standard	ASTM/AISI/JUST/GB/DIN/EN

Applications

253 MA has come to be used extensively in the metallurgical, petrochemical and power industries. Typical applications are:

Tubes in waste heat recovery systems in the metallurgical industry, e.g. recuperators

Tubes in heat treatment furnaces, e.g. radiation tubes, thermocouple protection tubes, burner components, furnace rollers

Tubes for injection of pulverized coal in blast furnaces Tubing for fluidized-bed combustion plants

Furnace tubes for mud incineration plants

Tubes for carbon black process gas coolers/air heaters Tubes for the glass and cement industries

Styrene reactor tubes EDC cracking tubes

Convection tubes in ethylene cracking

Air preheater tubes in sulphuric acid gas converters Muffle tubes in continuous wire annealing furnaces

Corrosion resistance

Air

253 MA has very high resistance to oxidation, especially at cyclically varying temperatures. See Figs. 3 and 4. The service temperature in air should not exceed about 1150°C (2100°F).

Isothermal oxidation at 1150°C (2100°F) for 100 h results in a corrosion rate of about 0.3 mm/year (13 mpy), and exposure at the same temperature for 1000 h causes about 0.2 mm/year (9 mpy).

Cyclic oxidation at 1150°C (2100oF) for 5 x 24 h, with cooling to room temperature every 24 hours gives a corrosion rate of less than 1.1 mm/year (43 mpy), which is only marginally greater than the corrosion rate at 1000°C (1830°F).

Cyclic oxidation testing for 1000 h (15 minutes at the testing temperature and 5 minutes at room temperature, making a total of 3000 cycles) places heavy demands on the elasticity and adhesive capacity of the oxide. The

test results in Fig. 4 show that the resistance of 253 MA in such difficult conditions is superior to that of both ASTM TP310 and EN 1.4828 (ASTM TP309). The very good properties of this grade in cyclic conditions

have been achieved by adding rare earth metals and silicon.

Figure 3. Oxidation in air during cyclic testing 5x24 h with cooling to room temperature every 24 h. Comparison of Alleima 253 MA with four other high temperature materials.

1 = EN 1.4828 (ASTM TP309)

2 = ASTM TP446

3 = ASTM TP310

4 = Sandvik 253 MA

5 = Alloy 800 H

Figure 4. Oxidation in air during 1000 h cyclic exposure. The cycles comprise 15 min. at the testing temperature and 5 min at room temperature. The curves represent averages.

Carburizing atmosphere

Carburization can occur when a material comes into contact with hot gases with high carbon activity, e.g.

hydrocarbons. The degree of carburization depends on the composition of the material and on the carbon and oxygen contents of the gas.

Thanks to the relatively high chromium content and the addition of silicon and rare earth metals, a protective oxide is easily formed on the surface of 253 MA material. Carburization resistance is, therefore, good.Fig. 5 shows carburization after 500 h at different temperatures, in a mixture of about 10% methane and about 90%

argon containing 0.5% oxygen. As can be seen, Alleima 253 MA is less prone to carburization at high temperatures in these conditions than ASTM TP310 and Alloy 800H.

Figure 5. Carburization of a cylindrical test piece at 0.5 mm (0.02 in.) distance from the surface after testing for 500 h at different temperatures in about 10% CH4+ about 90% Ar + 0.5% O2.

Other gaseous atmospheres

In addition to its very good oxidation resistance in air, 253 MA is also highly resistant to other

atmospheres. The highly protective oxide layer makes it possible to use this steel at high temperatures in atmospheres containing sulphur and other aggressive compounds.

Bending

Annealing after cold bending is not normally necessary, but this should be reviewed depending on the degree of bending and the operating conditions.

If cold bending has exceeded 10–20%, we recommend solution annealing for tubes that are to be used at temperatures above about 800°C (1450°F), and when the highest possible creep strength is required in the bent tube.

Hot bending should be carried out at 1100–850°C (2050–1560°F) and should be followed by solution annealing.

PRODUCT SHOW

Approvals

Approved for use in ASME Boiler and Pressure Vessel Code, Section I, III and VIII, Div. 1 (SA-182,SA-213,SA-240, SA-249 SA-312 and SA-479).

Chemical composition (nominal)

Chemical composition (nominal) %

C	Si	Mn	P	S	Cr	Ni	N	Ce*
0.08	1.6	≤0.8	≤0.040	≤0.030	21	11	0.17	0.05

* To cerium should be added the quantity of other rare earth metals, since the the additive takes the form of misch metal containing about 50% Ce.

Heat treatment

Tubes are delivered in the heat treated condition. If another heat treatment is needed after further processing, the following is recommended:

Stress relieving

850-950°C (1560-1740°F), 10-15 minutes, cooling in air.

Solution annealing

1050-1150°C (1920-2100°F), 5-20 minutes, rapid cooling in air or water.

Mechanical properties

Metric units, at 20°C

Proof strength		Tensile strength	Elong.	Elong.	Hardness
Rp0.2a)	Rp1.0a)	Rm	Ab)	A2"	Vickers
MPa	MPa	MPa	%	%
≥310	≥350	650-850	≥40	≥40	≈190

1 MPa = 1 N/mm2

Imperial units, at 68°F

Proof strength		Tensile strength	Elong.	Elong.	Hardness
Rp0.2a)	Rp1.0a)	Rm	Ab)	A2"	Vickers
ksi	ksi	ksi	%	%
≥45	≥51	94-123	≥40	≥40	≈190

a) Rp0.2 and Rp1.0 correspond to 0.2% offset and 1.0% offset yield strength, respectively.

b) Based on L0 = 5.65 √S0 where L0 is the original gauge length and S0 the original cross-section area

At high temperatures

Metric units

Temperature	Proof strength		Tensile strength
°C	Rp.02	Rp1.0	Rm
	MPa	MPa	MPa
100	≥225	≥265	≥550
200	≥189	≥215	≥475
300	≥170	≥200	≥440
400	≥160	≥190	≥425
500	≥150	≥180	≥400
600	≥140	≥165	≥340
Imperial units Temperature	Proof strength		Tensile strength
°F	Rp.02	Rp1.0	Rm
	ksi	ksi	ksi
200	≥33.5	≥39.0	≥80.5
400	≥26.0	≥31.0	≥68.5
600	≥24.5	≥28.5	≥63.6
800	≥23.0	≥27.5	≥61.0
1000	≥21.0	≥25.5	≥55.0
1200	≥19.5	≥23.0	≥46.5

Temperature	Creep strength 1%		Creep rupture strength
°C	10 000 h	10 000 h	10 000 h	10 000 h
	MPa	MPa	MPa	MPa
525	-	-	-	162
550	-	-	-	128
575	-	-	167	102
600	117	70	138	82
625	93	55	112	64
650	75	42	94	52
675	59	32	76	43
700	46	25	62	33
725	37	20	50	27
750	31	16	41	22
775	25	13	33	18
800	20	11	27 (28)	15 (16)
825	17	9.4	22 (23)	12 (14)
850	14	8	18 (20)	10 (12)
875	12	6.7	15 (17)	8.8 (10)
900	10	5.7	13 (14)	7.5 (8.4)
925	8.5	4.8	11 (12)	6.6 (7.2)
950	7.3	4	9.6 (10.5)	5.7 (6.3)
975	6.3	3.5	8.2 (9.0)	5.0 (5.8)
1000	5.4	3	7.0 (7.8)	4.3 (4.9)
1025	-	-	6.2 (6.6)	3.8
1050	-	-	5.5 (5.7)	3.3
1075	-	-	4.9	3
1100	-	-	4.3	2.6

Temperature	Creep strength 1%		Creep rupture strength
°F	10 000 h	100 000 h	10 000 h	100 000 h
	ksi	ksi	ksi	ksi
1000	-	-	-	20.9
1050	-	-	-	16.1
1100	-	-	21.2	12.6
1150	13.9	8.3	17.1	9.7
1200	10.9	6.1	13.8	7.5
1250	8.4	4.5	10.7	5.9
1300	6.5	3.5	8.6	4.6
1350	5.1	2.8	6.8	3.8
1400	4.1	2.2	5.5	2.9
1450	3.2	1.7	4.3 (4.4)	2.5
1500	3.6	1.42	3.4 (3.6)	1.9 (2.1)
1550	2.2	1.19	2.7 (3.0)	1.5 (1.8)
1600	1.7	0.99	2.2 (2.5)	1.25 (1.5)
1650	1.45	0.81	1.9 (2.0)	1.07 (1.26)
1700	1.23	0.68	1.6 (1.7)	0.93 (1.04)
1750	1.04	0.58	1.33 (1.46)	0.80 (0.88)
1800	0.87	0.49	1.13 (1.03)	0.70 (0.75)
1850	-	-	0.96 (1.03)	0.59 (0.68)
1900	-	-	0.84 (0.88)	0.51
1950	-	-	0.75 (0.77)	0.45
2000	-	-	0.67	0.39

Fig. 1. Proof strength Rp0.2 and creep rupture strength at 10 000 and 100 000 h.

Fig. 2 Relationship between nominal stress and minimum creep rate at 600 –1100°C (1110–2010°F).

Physical properties

Density: 7.8 g/cm3, 0.28 lb/in3

Relative magnetic permeability

1.003 (typical value)

Thermal conductivity
Temperature, °C	W/m °C	Temperature, °F	Btu/ft h °F
20	13	68	7.5
100	14	200	8.5
200	16	400	9.5
300	18	600	10.5
400	20	800	11.5
500	21	1000	12.5
600	23	1200	13.5
700	24	1400	14.5
800	25	1600	15
900	26	1800	16
1000	28	2000	17
1100	29	-	-

Specific heat capacity
Temperature, °C	J/kg °C	Temperature, °F	Btu/ft h °F
20	490	68	0.12
100	515	200	0.12
200	540	400	0.13
300	565	600	0.14
400	580	800	0.14
500	600	1000	0.15
600	615	1200	0.15
700	630	1400	0.15
800	645	1600	0.16
900	655	1800	0.16
1000	665	2000	0.16
1100	680	-	-

Thermal expansion1)
Temperature, °C		Temperature, °F	Per °F
30-100	16.5	86-200	9.5
30-200	17	86-400	9.5
30-300	17	86-600	9.5
30-400	17.5	86-800	10
30-500	18	86-1000	10
30-600	18	86-1200	10
30-700	18.5	86-1400	10.5
30-800	19	86-1600	10.5
30-900	19	86-1800	11
30-1000	19.5	-	-
1) mean values in temperature ranges (x10-6)

Resistivity
Temperature, °C µΩm		Temperature, °F	µΩin.
20	0.84	68	33.2
100	0.91	200	35.4
200	0.97	400	38.1
300	1.02	600	40.3
400	1.07	800	42.3
500	1.11	1000	44.1
600	1.15	1200	45.7
700	1.18	1400	47.1
800	1.21	1600	48.2
900	1.23	1800	49.2
1000	1.26	2000	50.5
1100	1.29	-	-

Modulus of elasticity1)
Temperature, °C	MPa	Temperature, °F	ksi
20	200	68	28.5
200	185	400	27
400	170	800	24
600	155	1200	21.5
800	135	1400	20
1000	120	1800	17.5
1. (x103)

COMPANY PROFILE

Shandong Haoxuan Group Co., Ltd. was established in March 2010 with a registered capital of 200 million yuan. It covers an area of more than 600 acres and employs more than 1,200 people. The company has passed the international quality control Management system IS09001:2008 standard, energy management system, occupational health and safety management system certification, belongs to the provincial and municipal key export enterprises.
The company has 18 main production lines for pickling, cold rolling, hot-dip galvanizing, hot-dip galvanizing, thick plate galvanizing, and color coating, forming an annual output of 1 million tons of pickling coils, 1 million tons of cold-rolled steel sheets, 900,000 tons 10,000 tons of hot-dip galvanized and hot-dip galvanized silicon steel sheets, 450,000 tons of thick galvanized steel sheets, and 300,000 tons of color-coated steel sheets. A leader in the field of zinc sheet products.
At present, the leading products are cold-rolled steel sheets, hot-dip galvanized steel sheets, hot-dip galvanized steel sheets, color-coated sheets, and corrugated sheets. The thickness is 0.12-3.0mm and the width is below 1250mm. The high-strength ultra-thin series steel plates are favored by foreign customers, and have been exported to more than 100 countries and regions such as Africa, the European Union, South America, Southeast Asia, and Central Asia. They are mainly used in roofs, wall constructions, color-coated substrates, and automotive industries. multiple fields and regions.
Corporate Culture Business Vision:
Improve value with quality and become the leader in the industry
Core concept: Harmony and benevolence, warm home
Core values: people-oriented, integrity, responsibility, excellence
Development strategy: Seek development with science and technology, seek benefits with management
Company mission: Devote ourselves to the development of new-type coated panels, and create a first-class coated panel manufacturing enterprise with international competitiveness.

APPLICATION FIELD

Arctecture
Metal cladding for buildings is now widely used not just for industrial buildings but now for state of the art designs from the world’s leading architects.

Transportation
We have the capability of supplying a variety of products suitable for the transportation, automotive and railway industry.

Oil And Gas
We offers many solutions to provide efficient production within the oil and gas industry.

Machinery Manufacturing
Stainless steel has been widely used in mechanical processing and manufacturing

PRODUCT SHOW

Q1:Can you send samples?
A:Of course, we can provide customers with free samples and express shipping service to all over of the world.

Q2:What product information do I need to provide?
A:Please kindly provide the grade, width, thickness, surface treatment requirement should you have and quantities you need to purchase.

Q3:It's my first time to import steel products, can you help me with it?
A:Sure,we have agent to arrange the shipment, we will do it together with you.

Q4:What ports of shipment are there?
A:Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you can specify other ports according to your needs.

Q5:What about product prices information?
A:Prices various according to periodic price changes of raw materials.

Q6:What is your terms of payment ?
A:Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipment or based on BL copy or LC at sight.

Q7.Do you provide custom made Products service?
A: Yes,if you have your own design , we can produce according to your specification and drawing.

Q8:What are the certifications for your products?
A:We have ISO 9001, MTC, third parties’ inspections are all available such SGS, BV ect.

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