Cast Iron Class 30

Chemical Composition

Element Symbol Average Preferred Range %
Carbon C 2.8-3.5
Silicon Si 1.2-1.7
Manganese Mn 0.8-1.2
Phosphorus P 0-0.15
Chromium Cr 0.05-0.45
Nickel Ni 0.05-0.1
Molybdenum Mo 0-0.1
Sulfur S 0-0.12
Copper Cu 0.15-0.4
Iron Fe Balance

Mechanical Properties

Property Metric Values Imperial Values
Tensile Strenght Min 36 ksi 250 MPa
Hardness (Brinell) 190-240HB 190-240HB

Comparative Specifications

ASTM / SAE: ASTM A48 Grade 30

Afnor: Ft25D

EN (EU/US): EN-GJL-250

DIN: GG25

BS (British Standard): Grade 250

GB (Chinese Standard): HT250

ISO (International) / UNS: 250 / F11401

Applicable Casting Processes