16.8.2-17

type 
A specially designed hybrid alloy between 308H and 316H for high temperature applications.
applications 
Used mainly in power generation and chemical process industries on applications such as, steam turbines, catalytic crackers, transfer piping and furnace accessories.
Properties 

A specially designed composition where Molybdenum % is reduced to form a hybrid alloy between 308H and 316H, operates in temperatures up to 800C. Gives a very high resistance to thermal embrittlement. Creep ductility is enhanced at temperatures above 650C.

classification
AWS 
A 5.4: ~E 16.8.2-17
EN ISO 
3581-A: ~E 16 8 2
Suitable for 
ASTM / UNS DIN BS
304H / S30409 1.4948 304S51
321H / S32109 1.4941 321S51
347H / S34709 1.4961 347S51
316H / S31609 ................... 316S51, 316S53

 

approvals 
CE approved
welding positions: 
Typical weld deposit weight %

C

Mn

Si

Cr

Ni

Mo

Cu

P

S

0.05

1.25

0.45

15.5

8.25

1.25

0.3

0.015

0.01

Typical mechanical properties

Heat

RP0,2

Rm

A5

Impact Energy (J) ISO-V

Hardness

Treatment

MPa)

MPa

(%)

20°C

-40°C

-60°C

HRc / HV

AW

400

620

38

AW: as welded
redrying temperature 
200°C/1hr (not often required)
welding parameters / packing

Welding Parameters

Packing

D (mm)

Length (mm)

Current (A) DC+/AC

kg / can

kg / 6pack

kg / 1000

2.5

300

60-80

2.5

15

18.86

3.2

350

80-100

2.6

15.6

33

4.0

350

90-140

2.8

17

50

Disclaimer: Whilst all reasonable efforts have been made to ensure the accuracy of the information contained, the information contained or otherwise referenced herein is presented only as “typical” without guarantee or warranty, and any liability incurred from any reliance thereon is expressively disclaimed. Typical data are those obtained when welded and tested in accordance to prescribed standards, and should not be assumed to be the expected results in a particular application or weldment. Other tests and procedures may produce different results. Users are cautioned to confirm by qualification testing, or other appropriate means, the suitability of any welding consumable and procedure before use in the intended application. The selection and use of specific products is solely within the control of, and remains the sole responsibility of the customer. The right to change design and/or specifications without notice is reserved.