EN 1.4835 / UNS S30815 / 253 MA

• Applications

  • Metallurgical processes (e.g., recuperators in steel mills, PCI lances for blast furnaces)
  • Petrochemical plants (e.g., pyrolysis vessels, high-temperature piping systems)
  • Power generation (e.g., boiler nozzles, combustion chambers)
  • Cement production (e.g., kiln components, preheater cyclones)
  • Waste incineration systems
  • Industrial furnaces and heat treatment equipment

• Heat Treatment and Weldability

  Solution annealing at 1080 °C. Rapidly cooled with water and air.

  Weldability: Very good

• Chemical Composition

  Weight %	C	Mn	P	S	Si	Cr	Ni	N	Nb+Ta	Co	Fe	Al	Ti
  	0,09	0	0	0	1,6	21,0	11,0	0,17	0	0		0	0

• Mechanical Properties

  Design values are usually based on minimum proof strength values for constructions used at temperatures up to around 550°C. For higher temperatures, average creep strength values are used.

  Mechanical properties at room temperature, according to EN 10095

  Steel grade	Yield strength Rp0.2, MPa	Tensile strength Rm, MPa	Elongation [%]	Hardness [HB]
  253 MA	310	650-850	min. 40	max. 210

   

  Elevated temperature proof strength, Rp0,2, MPa (minimum values)

  Steel grade	50 °C	100 °C	150 °C	200 °C	250 °C	300 °C	350 °C	400 °C	450 °C	500 °C	550 °C	600 °C	700 °C
  253 MA	280	230	198	185	176	170	165	160	155	150	145	140	130

   

  Creep rupture strength, Rkm,100 000 MPa (mean values), according to EN 10095

  Steel grade	550 °C	600 °C	650 °C	700 °C	750 °C	800 °C	850 °C	900 °C	950 °C	1000 °C	1050 °C	1100 °C
  253 MA	160	88	55	35	22	15	11	8	5,5	4	3	2,3

   

Stocked products and dimensions

• Plate Stock

  MEASUREMENTS	KG/PLATE
  1,5 X 1500 X 3000 mm	54
  2 X 1500 X 3000 mm	72
  3 X 1500 X 3000 mm	108
  4 X 1500 X 3000 mm	144
  5 X 1500 X 3000 mm	180
  6 X 1500 X 3000 mm	216
  8 X 1500 X 3000 mm	288
  10 X 1500 X 3000 mm	360
  12 X 1500 X 3000 mm	432
  15 X 1500 X 3000 mm	540
  20 X 1500 X 3000 mm	720
  25 X 1500 X 3000 mm	900
  30 X 1500 X 3000 mm	1080
  35 X 1500 X 3000 mm	1260
  40 X 1500 X 3000 mm	1440
  50 X 1500 X 3000 mm	1800