Material No.: G 41400

DescriptionChemical
composition
Physical
mechanical
properties
Temparature
information
StandardsProcess
information
Application
Certification
ProductsAll

Description

EN symbol (short)42CrMo 4
Material No.1.7225
AFNOR42CrMo4 (NF EN 10083-3(03/2006) (Fr)
BS42CrMo4 ( EN 10083-3(03/2006) (GB)
Density lb/in.37,7
Hardness (HB)<=241
CompositionChrome-molybdenum alloyed heat treatable steel
CategoryHigh-temperature steel
Structure

Chemical Composition

 CSiMnPSCrMoNiCu
G 41400Min %0,380,150,75  0,800,15  
Max %0,430,351,000,0300,041,100,250,250,35
UNS G 41400
1.7225Min %0,38 0,60  0,900,15  
Max %0,450,400,900,0250,0351,200,30  
(Key to steel 2010)

Physical properties

PropertyValue
Density: lb/in.37,7
Hardness: (HB)<=241
Permeabilität bei 20°C---
Temperature T
°C/F
(°C/F)
Specific heat
J / kgK
(Btu / lb °F)
Thermal conductivity
W/mK
(Btu·in / ft2·h·°F)
Electric resistance
µΩ · cm
(Ω circ mill / ft)
Modulus of elasticity
kN/mm2
(103 ksi)
Expansion rate from 70°F bis T
10-6 / K
(10-6 / °F)
20 / ---470 (--)45,1 (---) 210 (--) 
200 /--- 44,1 (---) 197 (--)12,7 (---)
300 /--- 41,9 (---) 190 (--)13,2 (---)
500 /--- 36,9 (---)  13,8(---)
600 /--- 34,4 (---)  14,4 (---)

Mechanical properties (20°C / 68°F)

Dehngrenze 
Dehngrenze500-550 /72,5-79,7
Zugfestigkeit750-950 /108,7-137,7
Bruchdehnung13
Schlagarbeit ISO-V35
(Mittelwert von 3 Proben) 

Temparature information

Application area
Operation temperature ºF  to 932 ºF 
hardening
Working temperature1508 ºF  to 1616 ºF water/oil
Explanation reportDIN EN 10083-3 to follow
Solution heat treatment
Working temperature1922 ºF  to 1562 ºF 
austenitizing
Working temperature1544 ºF  to 1598 ºF 
Processing informationsguid value

Standards / information

StandardsDesciption
VdTÜV / Werkstoffblatt 147 /Ausgbe 09.01rolled and forged steel 42CrMo4, Material-Nr. 1.7225

Process information

Cold formingdenpendent on C content and crystalline structure
Chip removing processstrongly influenced by crystalline structure
Welding
 - Typedifficult to weld
 - Hintsmaterial has to be normalized or tempered

Main fields of application

Details of application
Certifications

Range of products

Product typeProduct
Processing / Constructionfrom sheets
Plates / Sheetsplates/sheets
plate/sheet cuts
Fittingswelded elbows
welded reductions
Welded T-pieces
seamless elbows
seamless reductions
seamless T-pieces
Other Fittings a.o. Weldolets, Nipples
Flanges / Collars / Flared tube endsvarious flanges (weld neck flange,blind flange etc.)
weld neck flange/blind flange
Pipes / Tubeswelded square pipes/tubes
seamless pipes/tubes
Bar steelsection steel
round bar steel

Liability exclusion

All aforementioned specifications serve as a general orientation and have to be reviewed depending on the conditions of use.
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