EI 308MA

Datasheet

Standards

EN ISO 3581 - A	E 21 10 R
TS EN ISO 3581 - A	E 21 10 R
DIN M. No.	1.4835

Properties And Applications

EI 308MA is a special rutile-type electrode designed for welding high-temperature stainless steels such as Outokumpu 253 MA and EI 308MA. These steels and filler metals, used in furnaces, combustion chambers, and burners, provide exceptional resistance to oxidation up to 1100°C. The chemical composition of EI 308MA is optimized to produce a weld metal with high crack resistance. These steels typically form a thick oxide layer during welding or hot rolling, and oxidized plates and welds must be cleaned before welding. The electrode offers easy arc initiation and re-ignition, features fine droplet transfer, and ensures good fusion with the base metal. The slag is easy to remove.It demonstrates excellent resistance to corrosion at high temperatures but is not designed for aqueous corrosion resistance.

Materials

EN	Material	ASTM
Outokumpu 253 MA	1.4835	S30815
Outokumpu 153 MA	1.4818	S30415

Typical Chemical Values of Weld Metal

Type of Analysis	C	Si	Mn	Cr	Ni	P	S	N
Weld Deposit	0.08	1.50	0.75	21.75	11.00	0.02	0.01	0.15

Type of Analysis

Weld Deposit

0.08

1.50

0.75

21.75

11.00

0.02

0.01

0.15

Typical Mechanical Values of Weld Metal(%)

Test Condition	Yield Strength (N/mm²)	Tensile Strength (N/mm²)	Elongation A5 (%)	Charpy V-Notch Properties (J)
As welded	520	700	35	20°C → 60

Test Condition

Yield Strength (N/mm²)

Tensile Strength (N/mm²)

Elongation A5 (%)

Charpy V-Notch Properties (J)

As welded

520

700

20°C → 60

Application Information

Welding Positions :

Polarity:

DC(+)

Welding Parameters & Efficiency :

Diameter x Length (mm)	Current (A)
2.50x300	50-75
3.25x350	80-120
4.00x350	100-150

Packaging Information

Product Code	Diameter X Length (mm)	Pieces per Box (~)	Weight Of The Box (kg)	Boxes Per Package	Weight Of The Package	Packaging Type
13040GJEM2	2.50x300	92	1.8	10	18.2	VAC Box
13040NJEM2	3.25x350	57	2.0	10	20.7	VAC Box
13040QJEM2	4.00x350	36	2.0	10	20.7	VAC Box

Storage & Re-Drying Information

>It can be dried maximum 5 times.

>It has to be dried at 250-300°C for 2 hour.