DAIKOWM 1CrMoS

GMAW
  • CREEP RESISTING STEELS
1CrMo

Description

Solid wire for creep resisting 1¼Cr- ½Mo steels
Wire rod with higher content of Si and Mn in order to improve weldability and quality of the weld metal. Designed for prolonged elevated temperature service up to about 550°C, especially in steam generation power plants. Suitable for corrosion resistance to sulphur bearing crude oil at 250-450° C. Used in chemical and petro-chemical industries for resistance to hydrogen attack in fabrication of hydrocrackers, coal liquefaction plant and NH3 pressure vessel operating at up to 450° C.
Specifications
ISO 21952-A
G CrMo 1 Si
AWS A5.28
ER80S-G
Shielding
M20, M21
Positions
PA, PB, PC, PD, PE, PF
Current
DC+
Packaging Type
Drums, B300, D200 and D100 spools.
Asme qualifications
F-No (QW432)
6
A-No (QW442)
3
Chem. Comp. %
DEFAULT
C
0.08
Mn
1
Ni
0.04
Cr
1.2
P
0.008
S
0.01
Mo
0.47
Si
0.66
Cu
0.15
Mechanical Properties
min
variant
Tensile strength Rm MPa
550
620
Yield strength Rp0.2 MPa
0
510
Elongation A (L0=5d0) %
0
22
Impact Charpy ISO-V
-
100J @ 20°C
Impact Charpy ISO-V
-
-
Welding Parameters
1 mm
1.2 mm
Ampere
180A - 240A
190A - 250A
Voltage
22V - 29V
26V - 30V
Packaging
Ø 0,8÷1,6mm
Ø 0,8÷1,6mm
Packaging Type
Drums, B300, D200 and D100 spools.
Drums, B300, D200 and D100 spools.
Description

Application

Designed for prolonged elevated temperature service up to 550°C, these consumables have primary applications in steam-generating power plants. These consumables excel in various components like piping, turbine castings, steam chests, valve bodies, and boiler superheaters. They also provide corrosion resistance in refineries for sulfur-bearing crude oil (250-450°C) and resist hydrogen attack in chemical and petrochemical industries for hydrocrackers, coal liquefaction plants, and NH3 pressure vessels (up to 450°C). In the as-welded state, these consumables yield a weld deposit with a useful 300HV hardness, suitable for build-up or hard surfacing to combat metal-to-metal wear and heavy impact. A minimum preheat and interpass temperature of 200°C is recommended, extending up to 300°C for thicker sections. It is crucial to maintain these temperatures throughout the welding cycle and for some time after the completion of welding. With the exception of specific applications, post-weld heat treatment (PWHT) is invariably necessary, typically at a temperature of 690°C, the duration of which depends on the thickness of the section.

Alloy Type

1¼Cr-½Mo alloyed steel consumables for elevated temperature service.

Microstructure

After PWHT, the microstructure consists of tempered bainite.

Materials


EN W.Nr.: 13CrMo 4-5 (1.7355), 13CrMo 4-4 (1.7335), 16CrMo 4-4 (1.7337), 11CrMo 5-5 (1.7339), GS-25CrMo 4 (1.7128), GS-17CrMo 5-5 (1.7357).
ASTM: A387 Gr 11 & 12, A182 F11 & F12, A217 WC6 & WC11, A234 WP11 & WP12, A199 T11, A200 T11, A213 T11 & T12, A335 P11 & P12.

DO YOU NEED HELP?

Go to our dedicated section or contact us
Daiko supporting the environment
Questo sito si avvale di cookie necessari al suo funzionamento ed utili alle finalità illustrate nella cookie policy.

Carrello

Il carrello è vuoto