KS D4302 for Nodular Iron - Dandong Foundry

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KS D4302 1994 Standard for Nodular Iron

This standard is for stipulating the physical properties of nodular iron, which is also called as ductile iron. This is a Korea standard, but this standard was similar with the other standards for nodular iron such as ASTM A536 in USA and GB T1348 in China. The following is the main content of KS D4302-1994 for your reference.

Grade and mechanical properties of nodular cast iron

Grade	Grade of the old type	Tensile strength σ_b≥/Mpa	Yield strength σ_0.2≥/Mpa	Elongation δ≥（%）	A_KV≥ / J		Hardness HBS
Grade	Grade of the old type	Tensile strength σ_b≥/Mpa	Yield strength σ_0.2≥/Mpa	Elongation δ≥（%）	Average value	Individual value	Hardness HBS
GCD 370	GCD 37	370	230	17	13	11	≤179
GCD 400	GCD 40	400	240	12	—	—	≤201
GCD 450	GCD 45	450	280	10	—	—	143~217
GCD 500	GCD 50	500	340	7	—	—	170~241
GCD 600	GCD 60	600	370	3	—	—	192~269
GCD 700	GCD 70	700	420	2	—	—	229~302
GCD 800	GCD 80	800	480	2	—	—	248~352

Chemical analysis of kinds of nodular cast iron（mass fraction）（%）

Grade	Grade of the old type	C	Si	Mn	P ≤	S ≤
GCD 370	GCD 37	≥2.5	≤2.5	≤0.4	0.08	0.02
GCD 400	GCD 40	≥2.5	—	—	—	0.02
GCD 450	GCD 45	≥2.5	—	—	—	0.02
GCD 500	GCD 50	≥2.5	—	—	—	0.02
GCD 600	GCD 60	≥2.5	—	—	—	0.02
GCD 700	GCD 70	≥2.5	—	—	—	0.02
GCD 800	GCD 80	≥2.5	—	—	—	0.02

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