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JIS G 4053 SNCM 439 Seamless Steel Pipes

Date:2020-01-11View:827Tags: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 (%)
Steel Grade	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.

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