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Pipe fittings

Product description
Parameters

Technical parameters:

Spheroidal Graphite Iron Castings (GB/T 1348-2009)

Compliance with relevant standards:

 

Technical parameters:

Designation

Tensile strength σ bN/ mm2 (kgf/nmm2)

 Yield strength σ0.2N/ mm2 (kgf/nmm2)

Elongation at break σ(%
For reference
Min. value
Brinell hardness HB
Main metallographic structure
QT400-18
400(40. 80)
250(25. 50)
18
130-180
Ferrite
QT400-15
400(40. 80)
250(25. 50)
15
130-180
Ferrite
QT400-10
450(45. 90)
310(31. 60)
10
160-210
Ferrite
QT500-7
500(51. 00)
310(32. 65)
7
170-250
Ferrite + Spherical light
QT600-3
600(61. 20)
370(37. 75)
3
190-270
Ferrite + Spherical light
QT700-2
700(71. 40)
420(42. 85)
2
225-305
Spherical light
QT800-2
800(81. 60)
480(49. 98)
2
124-335
Spherical light or tempered structure
QT900-2
900(91. 80)
600(61. 20)
2
280-360
Bainite or tempered martensite

 

 

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