AS2074 Cast Steel

Originated as AS B27 - 1931 and AS E7 - 1938. After consultation with stakeholders in both countries, Standards Australia and Standards New Zealand decided to develop this Standard as an Australian, rather than an Australian/New Zealand Standard.

The objective of this Standard is to specify the steel specifications, heat treatment and test requirements for cast steels.

AS 2074 - 1982 specified additional requirements, including fettling and dressing, freedom from defects, rectification of defects and certification. These additional requirements are now specified in AS 4738. This edition of the Standard is a standard of materials.

This Standard specifies requirements for carbon, low alloy and high alloy cast steels.

Grade	Chemical Composition %															Tensile Strength		Yi eld	Elon gation %
	C		Si		Mn		S	P	Cr		Mo		Ni		Other	Tensile Strength		Yi eld	Elon gation %
	min	max	min	max	min	max	max	max	min	max	min	max	min	max	max / range	min	max	min	min
AS2074/C1	0.1	0.18	-	0.60	0.60	1.00	0.050	0.050	-	-	-	-	-	-	-	490	-	-	12
AS2074/C2	-	0.15	-	0.60	-	0.50	0.050	0.050	-	-	-	-	-	-	-	340	430	-	17
AS2074/C3	-	0.25	-	0.60	-	0.90	0.060	0.060	-	-	-	-	-	-	-	430	-	230	17
AS2074/C4-1	-	0.30	-	0.60	-	1.00	0.060	0.060	-	-	-	-	-	-	-	460	-	245	21
AS2074/C4-2	-	0.35	-	0.60	-	1.00	0.060	0.060	-	-	-	-	-	-	-	490	-	265	15
AS2074/C5	-	0.45	-	0.60	-	1.00	0.060	0.060	-	-	-	-	-	-	-	540	-	295	11
AS2074/C6	0.40	0.50	-	0.60	-	1.00	0.050	0.050	-	-	-	-	-	-	-	620	-	325	8
AS2074/C7A-1	-	0.25	-	0.60	-	0.90	0.050	0.050	-	-	-	-	-	-	-	430	-	230	22
AS2074/C7A-2	-	0.30	-	0.60	-	0.90	0.050	0.050	-	-	-	-	-	-	-	480	-	245	20
AS2074/C7A-3	-	0.35	-	0.60	-	1.10	0.050	0.050	-	-	-	-	-	-	-	540	-	280	13
AS2074/L1A	0.18	0.25	-	0.60	1.20	1.60	0.050	0.050	-	-	-	-	-	-	-	540	-	340	13
AS2074/L1B	0.25	0.33	-	0.60	1.20	1.60	0.050	0.050	-	-	-	-	-	-	-	620	-	370	11
AS2074/L2A	0.45	0.55	-	0.75	0.50	1.00	0.060	0.060	0.80	1.20	-	-	-	-	A1 0.06	-	-	-	-
AS2074/L2B	0.55	0.65	-	0.75	0.50	1.00	0.060	0.060	0.80	1.50	0.20	0.40	-	-	A1 0.06	-	-	-	-
AS2074/L2C	0.70	0.90	-	0.75	0.50	1.20	0.060	0.060	1.30	2.40	0.20	0.40	-	-	-	-	-	-	-
AS2074/L3A	-	0.12	-	0.60	-	0.80	0.030	0.030	-	-	-	-	3.00	4.00	-	460	-	280	20
AS2074/L4A	0.10	0.18	-	0.60	0.30	0.60	0.040	0.040	-	-	-	-	2.75	3.50	A1 0.06	700	-	-	11
AS2074/L5A-1	-	0.25	0.20	0.50	0.50	1.00	0.050	0.050	-	-	0.40	0.70	-	-	-	460	-	280	15
AS2074/L5A-2	-	0.20	0.20	0.60	0.50	1.00	0.040	0.040	-	-	0.45	0.65	-	-	-	460	-	260	18
AS2074/L5B-1	-	0.20	-	0.60	0.50	0.80	0.050	0.050	1.00	1.50	0.45	0.65	-	-	-	480	-	280	17
AS2074/L5B-2	-	0.20	-	0.60	0.50	0.80	0.050	0.015	1.00	1.50	0.45	0.65	-	-	A1 0.01	480	-	280	17
AS2074/L5C	-	0.18	-	0.60	0.40	0.70	0.050	0.050	2.00	2.75	0.90	1.20	-	-	-	540	-	325	17
AS2074/L5D	-	0.25	-	0.75	0.30	0.70	0.040	0.040	2.50	3.50	0.35	0.60	-	-	-	620	770	370	13
AS2074/L5E	-	0.20	-	0.75	0.40	0.70	0.040	0.040	4.00	6.00	0.45	0.65	-	-	-	620	-	420	13
AS2074/L5F	-	0.20	-	0.60	0.50	0.80	0.050	0.050	4.00	1.50	0.90	1.20	-	-	V 0.15-0.25	650	-	415	11
AS2074/L5G	-	0.15	-	0.50	0.40	0.80	0.050	0.050	1.00	1.00	0.70	1.00	-	-	V 0.22-0.35	540	-	310	17
AS2074/L5H	0.10	0.15	-	0.45	0.40	0.70	0.030	0.030	0.70	0.50	0.40	0.60	-	-	V 0.22-0.30	510	-	295	17
AS2074/L6	-	0.35	-	-	-	-	0.050	0.050	0.30	-	-	-	-	-	-	620	-	415	19
AS2074/L6A-1	-	-	-	-	-	-	0.050	0.050	-	-	-	-	-	-	A1 0.06	700	850	495	11
AS2074/L6A-2	-	-	-	-	-	-	0.050	0.050	-	-	-	-	-	-	A1 0.06	750	-	585	15
AS2074/L6B-1	-	-	-	-	-	-	0.040	0.040	-	-	-	-	-	-	A1 0.06	850	1000	590	8
AS2074/L6B-2	-	-	-	-	-	-	0.040	0.040	-	-	-	-	-	-	A1 0.06	825	-	690	12
AS2074/L6C	-	-	-	-	-	-	0.030	0.030	-	-	-	-	-	-	A1 0.06	1000	1160	695	6
AS2074/H1A	1.0	1.35	-	1.00	11.00	-	0.10	-	-	-	-	-	-	-	-	-	-	-	-
AS2074/H1B	1.0	1.35	-	1.00	11.00	-	0.10	-	1.50	2.50	-	-	-	-	-	-	-	-	-
AS2074/H1C	1.0	1.35	-	1.00	11.00	-	0.10	-	-	-	0.90	1.20	-	-	-	-	-	-	-
AS2074/H1D	1.3	1.50	-	1.00	17.0	-	0.10	-	-	-	-	-	-	-	-	-	-	-	-
AS2074/H2A	-	0.20	-	1.00	0.30	0.70	0.040	0.040	8.0	10.0	0.90	1.20	-	-	-	620	-	415	13
AS2074/H3A	-	0.15	-	1.00	-	1.00	0.040	0.040	11.5	13.5	-	-	-	1.00	-	540	-	370	15
AS2074/H3B	-	0.20	-	1.00	-	1.00	0.040	0.040	11.5	13.5	-	-		1.00	-	700	-	465	11
AS2074/H3C	-	0.10	-	1.00	-	1.00	0.040	0.040	11.5	13.5	-	0.60	3.40	4.20	-	770	-	620	12
AS2074/H3D	-	0.06	-	1.00	-	1.00	0.040	0.030	11.5	14.0	0.40	1.00	3.50	4.50	-	755	-	550	15
AS2074/H4A	-	0.50	-	2.00	-	1.00	0.040	0.040	26.0	30.0	-	0.50	-	4.00	-	-	-	-	-
AS2074/H5A	-	0.08	-	1.50	-	2.00	0.040	0.040	17.0	21.0	-	-	8.0	-	-	480	-	200	20
AS2074/H5B	-	0.12	-	1.50	-	2.00	0.040	0.040	17.0	21.0	-	-	8.0	-	-	480	-	200	20
AS2074/H5C	-	0.08	-	1.50	-	2.00	0.040	0.040	17.0	21.0	-	-	8.5	-	Nb 8×C-1.0(max)	480	-	200	20
AS2074/H6A		0.08	-	1.50	-	2.00	0.040	0.040	18.0	20.0	3.00	4.00	10.0	-	-	480	-	200	20
AS2074/H6B		0.08	-	1.50	-	2.00	0.040	0.040	18.0	20.0	2.00	3.00	10.0	-	-	480	-	200	20
AS2074/H6C		0.08	-	1.50	-	2.00	0.040	0.040	17.00	20.0	2.00	3.00	10.0	-	Nb 8× C-1.0(max)	480	-	200	15
AS2074/H6D	-	0.03	-	1.50	-	2.00	0.040	0.040	17.0	21.0	2.00	3.00	9.0	13.0	-	430	-	210	26
AS2074/H6E	-	0.25	-	1.00	-	1.20	0.045	0.010	19.5	20.5	6.00	7.00	17.5	19.5	-	550	-	260	30
AS2074/H7A	-	0.07	-	1.00	-	0.70	0.035	0.030	15.5	17.7	-	-	3.6	4.6	Cu 2.50~3.20	-	-	-	-
AS2074/H7B	-	0.07	-	1.00	-	0.70	0.035	0.030	14.4	15.5	-	-	4.5	5.5	Cu 2.50~3.20	-	-	-	-
AS2074/H8A	-	0.20	-	2.00	-	2.00	0.040	0.040	22.0	27.0	-	-	10.0	14.0	-	480	-	200	20
AS2074/H8B	0.20	0.45	-	1.50	-	2.50	0.040	0.040	24.0	28.0	-	0.50	11.0	14.0	N 0.20	560	-	-	3
AS2074/H8C	-	0.50	-	2.50	-	2.00	0.060	0.060	22.0	27.0	-	1.00	10.0	14.0	-	-	-	-	-
AS2074/H8E-1	-	0.20	-	1.50	-	2.00	0.040	0.040	24.0	27.0	-	0.5	19.0	22.0	-	450	-	200	20

1. Advice and recommendations on information for optional test requirements to be supplied by the purchaser at the time of enquiry or order are contained in Appendix A.

2. A summary of chemical composition and tensile properties of steels included in this Standard is given in Appendix B, which also provides guidance on the selection of grades for specific applications.

3. AS 2074 only specifies materials. AS 4738 specifies the other additional requirements of the casting.

The following sheet is the comparison of materials between AS2074 and BS3100. As for the specific chemical components, please refer to the link of BS3100 Standard.