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JIS G 4053 SNCM 439 Seamless Steel Pipes

Date:2018-01-08    View:625      Tag:JIS G 4053 SNCM 439 Seamless Steel Pipes
JIS G 4053 SNCM 439 Seamless Steel Pipes 
Standard : JIS G 4053 
Equivalent material: 40CrNiMoA , 4340 , 817M40 ,816M40
Delivery condition : By heat treatment (normalizing, annealing and high temperature tempering) or heat treatment state delivery, delivery status should be indicated in the contract
Chemical Composition and Mechanical Properties

Steel Grade

Chemical composition (%)

C

Si

Mn

P

S

Ni

Cr

Mo

SNCM439

0.36-0.43

0.15-0.35

0.60-0.90

0.030max

0.030max

1.60-2.00

0.60-1.00

0.15-0.30

Steel grade

Yield Strenght 
         Mpa (min)

Tensile  Strength
         Mpa(min)

Elogation 
%(min)

SNCM 439

835

980

12

SNCM 439 this material base on JIS G4053 Standard , this Japanese Industrial Standard has been prepared base on the first edition of ISO 683-1 Heat-treatable steels, alloy steels and free-cutting steels .
Percentage reduction of area : ≥55
Impact (J/cm2):≥78
Hardness :≤269HB 
Heat treatment  specification :  850 ℃ quenching  ,oil cooling; 600 ℃ tempering, water cooling, oil cooling.
The SNCM 439 Seamless pipe delivery condition is often like BK,BKW GBK,GZF,NBK,NZF and so on.  JIS G4053 Standard SNCM439  Seamless Steel pipe must be compatible with production methods of the outside surface and inner surface.
If you have requirement about SNCM 439 pipe , please feel free to contact with us.

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