Product Description

1.4835 (UNS S30815 – 253MA®* – SS2368).

The steel grade 1.4835 ( also called UNS S30815, 253MA®* and SS2368) is an austenitic stainless high temperature steel with good resistance to oxidation. The steel has been designed to be used at temperatures over 550°C, the most suitable temperature range is 850-1100°C. The steel suits for production of details with good resistance to temperature corrosion and relatively high strength at elevated temperatures. It also has good creep strength properties. 1.4835 is not magnetic but can be slightly magnetic after cold working or welding.

Typical application areas for 1.4835:

Ovens
Construction
Building
As details at high temperature

Good formability and weldability:

1.4835 has a good weldability and can be welded with shielded metal arc welding, gas tungsten arc welding, plasma arc welding and submerged-arc welding. You shall use low heat input and use filler metals of type EN 1.4835 when you weld. The steel can be both cold and hot formed but it can only be hardened by cold working. The steel has high hardness and at machining you need to follow cutting recommendations.

Composition ranges for 253MA grade stainless steel
253MA	C	Mn	Si	P	S	Cr	Ni	N	Ce
Min	0.05	-	1.1	-	-	20	10	0.14	0.03
Max	0.1	0.8	2.0	0.04	0.03	22	12	0.2	0.08

Mechanical properties of 253MA grade stainless steel
Tensile	Yield	Elongation %	Hardness
			HRB	HB
600 min	300 min	40 min	95max	217max

Physical properties of 253MA grade stainless steel
Density (kg/m3)	Elastic Modulus (GPa)	Mean Coefficient of Thermal Expansion			Thermal Conductivity		Specific Heat 0-100°C (J/kg.K)	Electrical Resistivity (nW.m)
		0-100°C	0-600°C	0-1000°C	at 20°C	at 1000°C
7800	200	17	18.5	19.5	15	29	500	850

Applications of 253MA grade stainless steel:

Typical applications include:
Furnace components including burners, retorts, conveyor belts, fans, jigs and baskets, rollers, walking beams, radiant tubes, electric heater elements, refractory anchors, hoods, flues, grates, expansion bellows.
Petrochemical and refinery tube hangers.

Corrosion Resistance.

Although not designed for aqueous corrosion resistance the high chromium and nitrogen contents give the grade a pitting resistance approximating that of 316. 253MA does however have a high carbon content so is highly susceptible to sensitisation from welding or service exposure.

Heat Resistance.

Oxidation - excellent resistance to air, at temperatures up to 1150°C. At high temperatures the steel quickly forms a thin, highly adherent and elastic oxide. This oxide gives good protection even under cyclic conditions.
Carburisation - Under oxidising conditions this grade can perform well, but alloys with higher nickel content are preferred if the atmosphere is reducing.
Sulphidation - good resistance to sulphur-bearing gases in an oxidising atmosphere, even if only traces of oxygen are present. Reducing gases prevent the protective oxide forming.
253MA has high strength at elevated temperatures so is often used for structural and pressure-containing applications at temperatures above about 500°C and up to about 900°C. Its strength at these temperatures is higher than that of alternatives such as Grade 310.
253MA will become sensitised in the temperature range of 425-860°C; this is not a problem for high temperature applications, but will result in reduced aqueous corrosion resistance.

Heat Treatment.

Solution Treatment (Annealing) - Heat to 1050-1150°C and cool rapidly. It is recommended that the material be solution treated after 10-20% cold work to achieve maximum creep strength in service.
This grade cannot be hardened by thermal treatment.

Detailed Images

stainless steel 253ma seamless tubing.

Outer Diameter : 6.00 mm OD up to 914.4 mm OD, Sizes up to 24" NB Pipes & Tubes : 1/2" NB - 16" NB

stainless steel 253ma seamless pipe.

Form : Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, "U" Shape, Pan Cake Coils

Packing & Delivery

253Ma stainless steel packing.

1.Bundle packing
2.Plain end or varnished as per buyer's requestments
3.Wrapped in waterproof paper
4.Sackcloth with several steel strips
5.Pack in heavy tri-wall boxes

Specifications.

UNS S30815, Werkstoff 1.4835
ASTM/ASME A/SA312, A/SA213, A/SA 269, DIN 17458, DIN 17459, JIS G3463. After negotiation, we can supply pipe with customers' requirement.

Process flow

Our company

LIAOCHENG KUNCHENG PIPE CO.,LTD.

Room A2709 ChuangYe Building,Liaocheng City, Shandong Province, China

Mobile&Whatsapp:+8613184174934(Wechat)

Tel&Fax:0086-0635-2930669

Skype:mrhrc

PRODUCTS MENU:

Honed Tube : JIS STKM13C, DIN ST52, SAE1020 ,DIN CK45 etc.

Alloy Seamless Tube: ASME SA-335 (P5, P9, P11, P22 P91) A213 -T22/T12 etc.

Hollow seamless bar :AISI 4130 ,ASTM 4140 etc.

Carbon steel pipe :ASTM A106 Gr.B

Stainless steel pipe : 304, 316, 316L & H grades etc.

Hollow section :S235JR, S275JR, S355JR, P265GH, P355N

SERVICES MENU:

Machining:Turning , Threading , Milling , Boring , Grooving , Skiving , Trepanning , Sawing , Straightening , honing etc

Brand Name	LCKC
Place of Origin	Shandong, China
Model Number	duplex stainless steel
Certification	SGS
Thickness	1mm-40mm
Type	welded & seamless
Application	Chemical
Standard	ASTM, AISI, DIN, EN, GB, JIS
Outer Diameter	Customized
Welding Line Type	Seamless
Steel Grade	duplex stainless steel

Alloy UNS S30815 Pipes & Tubes Stainless Steel 253 MA Seamless Tubes

Product Features