AS 1830 is an Australia standard for materials of grey cast iron. It is useful for iron casting buyers and suppliers. However, this standard is not as common as ISO and ASTM standards, so we listed some main information of this standard as followings, and provided the cross-references with other popular standards. Hope this could be useful for those iron foundries in China, such as our Dandong Foundry.

This standard is originated as AS B26 - 1942 and AS B89 - 1942. Previous edition is AS 1830 - 2002. The fourth edition is published in 2007.

This Standard was prepared by the Joint Standards Australia/Standards New Zealand Committee MT-001, Iron and Steel, to supersede AS 1830 - 2002, Grey cast iron.

This Standard is identical with, and has been reproduced from ISO 185 : 2005, Grey cast irons. The objective of this Standard is to specify grades of Grey cast irons by chemical composition and hardness.

This International Standard specifies the properties of unalloyed and low-alloyed grey cast irons used for castings, which have been manufactured in sand moulds or in moulds with comparable thermal behavior.

Cross-references of ISO 185 grade designations to other standards

Table 1 provides a selection of approximate cross-references of ISO 185 grade designations to standard grades of cast iron according to the previous (1988) edition of ISO 185 and to standard grades from current EN, ASTM, JIS, and SAE specifications for grey cast iron.

Because SAE specifies grey cast-iron grades by a combination of minimum test-bar tensile-strength-to-hardness ratio and minimum casting hardness, SAE J431 grades, in addition to those shown, may also be produced to meet a grade specified only by tensile strength. Because SAE hardness grades specify minimum casting hardness, a direct correlation between SAE J431 and ISO 185 hardness grades is not possible;

Table D.1 shows SAE grades which have minimum hardness values approximately the same as ISO grades.

Because ISO 185:1988 hardness grades did not differentiate between expected values for different relevant wall thickness, it is possible that more than one of the previous ISO hardness grades may satisfy the requirements of the current grades.

This article was from Dandong Foundry. For the whole article, please check Dandong Foundry Blog.