China investment casting supplier water impeller parts--OLYM Metal Products Co., Ltd，which founded in 2001，is a specialized investment casting manufacturer，member of China Foundry Association and one of the strongest manufacturers in investment casting industry in China.
We always manufacture high quality precision castings for different industries and find more applications of the investment castings.
Our engineers with rich experience are capable of serving customers with a package solution in terms of optimizing design of part, casting, machining, heat-treatment and finish so that our customers can cut down cost in their products and obtain value-added parts. 

 
MATERIAL STANDARDS
 
A wide range of carbon steel, low alloy steel and Stainless Steel are available on Customer’s specifications.

Casting materials being processed	Material standards	Materials category	C	Si	Mn	P≤	S≤	Cr	Ni	Mo	Cu	Nb
CF-8(304)	USA ASTM A743      A743M-93a	Austenitic Stainless Steel	≤0.08	≤2.0	≤1.5	0.04	0.04	18.0-21.0	8.0-11.0
CF-8M(316)	USA ASTM A743      A743M-93a	Austenitic Stainless Steel	≤0.08	≤2.0	≤1.5	0.04	0.04	18.0-21.0	9.0-12.0	2.0-3.0
CF-3M(316L)	USA ASTM A743      A743M-93a	Austenitic Stainless Steel	≤0.03	≤1.5	≤1.5	0.04	0.04	17.0-21.0	9.0-13.0	2.0-3.0
1.4581	Germany　   DIN EN 10283	Austenitic Stainless Steel	≤0.07	≤1.5	≤1.5	0.04	0.03	18.0-20.0	9.0-12.0	2.0-2.5		≥8*C,≤1.0
CF-16F(303T)	Special For Customer	Austenitic Stainless Steel	≤0.15	≤1.0	≤2.0	0.03	0.08-0.13	17.0-19.0	8.0-10.0	≤0.6
SCS14	Japan  JIS G5121 1991	Austenitic Stainless Steel	≤0.08	≤2.0	≤2.0	0.04	0.04	17.0-20.0	10.0-14.0	2.0-3.0
CB7Cu-1 (17-4PH)	USA ASTM A743     A743M-93a	Precipitation-hardening Stainless Steel	≤0.07	≤1.0	≤0.7	0.035	0.03	15.5-17.7	3.6-4.6		2.5-3.2	0.15-0.35
430	USA AISI	Ferritic Stainless Steel	≤0.12	≤1.0	≤1.0	0.04	0.03	16.0-18.0
CA-40(2Cr13)	USA ASTM A743      A743M-93a	Martensitic Stainless Steel	0.20-0.40	≤1.5	≤1.0	0.04	0.04	11.5-14.0	≤1.0
1.4059	Germany    DIN EN 10283	Martensitic Stainless Steel	0.2-0.27	≤1.0	≤1.0	0.045	0.03	15.0-17.0	1.25-2.5
IC 1020	USA ICI	Carbon Cast Steel	0.15-0.25	0.2-1.0	0.2-0.6	0.04	0.045	≤0.35	≤0.5	≤0.25
IC 1030	USA ICI	Carbon Cast Steel	0.25-0.35	0.2-1.0	0.7-1.0	0.04	0.045	≤0.35	≤0.5
IC 1040	USA ICI	Carbon Cast Steel	0.35-0.45	0.2-1.0	0.7-1.0	0.04	0.045	≤0.35	≤0.5
IC 1050	USA ICI	Carbon Cast Steel	0.45-0.55	0.2-1.0	0.7-1.0	0.04	0.045
IC 4140	USA ICI	Alloy Cast Steel	0.35-0.45	0.2-0.8	0.7-1.0	0.04	0.045	0.8-1.1	≤0.5	0.15-0.25
IC 4150	USA ICI	Alloy Cast Steel	0.45-0.55	0.2-0.8	0.75-1.0	0.04	0.04	0.8-1.1		0.15-0.25
IC 4340	USA ICI	Alloy Cast Steel	0.35-0.45	0.2-0.8	0.7-1.0	0.04	0.045	0.7-0.9	1.65-2.00	0.2-0.3
IC 8620	USA ICI	Alloy Cast Steel	0.15-0.25	0.2-0.8	0.65-0.95	0.04	0.045	0.4-0.7	0.4-0.7	0.15-0.25
GS-25CrMo4	Germany    DIN 17182-85	Alloy Cast Steel	0.22-0.29	0.3-0.5	0.5-0.8	0.035	0.035	0.9-1.2	＜0.3	0.15-0.3
ZGMn13-2	China      GB5680-1998	High-Mn Wear- resistantCast Steel	1.0-1.4	0.3-1.0	11.0-14.0	0.09	0.05
1.4136	Germany      DIN 17465-77	Wear-resistant Cast Steel	0.5-0.9	≤2.0	≤1.0	0.045	0.03	27.0-30.0		2.0-2.5
CS-2	USA       ASTM A597-93	Alloy Tool Cast Steel	0.45-0.55	0.9~1.2	≤0.75	0.03	0.03			0.4-0.6
CS-7	USA         ASTM A597-9３	Alloy Tool Cast Steel	0.50-0.60	≤1	0.5-0.8	0.03	0.03		3.0-3.5	1.2-1.6

 
 
DIMENSION TOLERANCE
 
Linear Tolerance
 

Nominaldimension (mm)		Length，width，height (mm)					Centre line distances (mm)
		D1		D2		D3			D1	D2
From	To	Tolerance	Field	Tolerance	Field	Tolerance		Field	Tolerance	Tolerance
0	6	土0.10	0.2	土0.08	0.16	土0.06		0.12	土0.25	土0.16
6	10	土0.12	0.24	土0.10	0.2
10	14	土0.15	0.3	土0.12	0.24	土0.09		0.18
14	18	土0.20	0.4	土0.14	0.28
18	24	土0.25	0.5	土0.17	0.34	土0.12		0.23	土0.32	土0.20
24	30	土0.30	0.6	土0.20	0.4	土0.14		0.27
30	40	土0.37	0.74	土0.25	0.5	土0.17		0.33	土0.50	土0.30
40	50	土0.44	0.88	土0.30	0.6	土0.20		0.39
50	65	土0.52	1.04	土0.38	0.76	土0.23		0.46	土0.71	土0.45
65	80	土0.60	1.2	土0.46	0.92	土0.27		0.53
80	100	土0.68	1.38	土0.53	1.06	土0.30		0.6	土0.90	土0.60
100	120	土0.76	1.52	土0.60	1.2	土0.33		0.66
120	140	土0.84	1.68	土0.65	1.3	土0.36		0.71	土1.15	土0.85
140	160	土0.92	1.84	土0.72	1.44	土0.38		0.76
160	180	土1.02	2.04	土0.80	1.6	土0.42		0.81
180	200	土1.12	2.24	土0.88	1.76	土0.43		0.86	土1.80	土1.00
200	225	土1.28	2.56	土0.95	1.9	土0.47		0.93
225	250	土1.44	2.88	土1.05	2.1	土0.51		1.02
250	280	土1.64	3.28	土1.15	2.3	土0.56		1.12	土2.20	土1.25
280	315	土1.84	3.68	土1.25	2.5	土0.63		1.26
315	355	土2.10	4.2	土1.40	2.6	土0.71		1.42	土2.60	土1.60
355	400	土2.40	4.8	土1.60	3.2	土0.80		1.6

 
D1: General dimension tolerances
D2: Applicable to important dimensions requiring close tolerances
D3: Premium tolerances require additional operations at extra cost,
Only applied to a few special dimensions
 
Angle Tolerance: 土0.5° to土1°
Straightess:0.005”per inch