Wholesale Steel Investment Casting Manufacturer - Precision Investment Casting Valve Housing of Stainless Steel – RMC Foundry

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Wholesale Steel Investment Casting Manufacturer - Precision Investment Casting Valve Housing of Stainless Steel – RMC Foundry Detail:

Stainless steel is the abbreviation of stainless and acid-resistant steel. It is called stainless steel that is resistant to weak corrosive media such as air, steam, and water. Corrosion steel is called acid-resistant steel.

Due to the difference in chemical composition between the ordinary stainless steel and acid-resistant steel, their corrosion resistance is different. Ordinary stainless steel is generally not resistant to chemical media corrosion, while acid-resistant steel is generally non-corrosive. The term “stainless steel” not only refers to a single type of stainless steel, but also refers to more than one hundred industrial stainless steels. Each stainless steel developed has good performance in its specific application field.

Stainless steel is often divided into martensitic stainless steel, ferritic stainless steel, austenitic stainless steel, austenitic-ferritic (duplex) stainless steel and precipitation hardening stainless steel according to the state of microstructure. In addition, according to the chemical compositions, it can be divided into chromium stainless steel, chromium nickel stainless steel and chromium manganese nitrogen stainless steel, etc.

In casting production, most of the stainless steel castings are completed by investment casting. The surface of stainless steel castings produced by investment casting is smoother and the dimensional accuracy is easier to control. Of course, the cost of investment casting stainless steel parts is relatively high compared to other processes and materials.

Investment casting, also called precision casting or lost wax casting, is widely used as it offers asymmetrical casting with very fine details to be manufactured relatively inexpensively. The process involves producing a metal casting using a refractory mould made from a wax replica pattern.

Equivalent Grade of Stainless Steel
GROUPS	AISI	W-stoff	DIN	BS	SS	U.N.E. / I.H.A.	UNI
Martensitic and Ferritic Stainless Steel	420 C	1,4034	X43Cr16
	440 B/1	1,4112	X90 Cr Mo V18
	-	1.2083	X42 Cr 13	-	2314	F.5263	-
	403	1.4000	X6Cr13	403 S 17	2301	F.3110	X6Cr13
	(410S)	1.4001	X7 Cr 14	(403 S17)	2301	F.3110	X6Cr13
	405	1.4002	X6 CrAl 13	405 S 17	-	F.3111	X6 CrAl 13
	416	1.4005	X12 CrS 13	416 S 21	2380	F.3411	X12CrS13
	410	1.4006	X 10 Cr 13	410 S21	2302	F.3401	X12Cr13
	430	1.4016	X6 Cr 17	430 S 17	2320	F.3113	X8Cr17
	420	1.4021	X20 Cr 13	420 S 37	2303	F.3402	X20Cr13
	420F	1.4028	X30 Cr 13	420 S 45	(2304)	F.3403	X30Cr13
	(420)	1.4031	X39Cr13	420 S 45	(2304)	F.3404	-
	431	1.4057	X20 CrNi 17 2	431 S 29	2321	F.3427	X16CrNi16
	430F	1.4104	X12 CrMoS 17	-	2383	F.3117	X10CrS17
	434	1.4113	X6 CrMo 17	434 S 17	2325	-	X8CrMo17
	430Ti	1.4510	X6 CrTi 17	-	-	-	X6CrTi17
	409	1.4512	X5 CrTi 12	409 S 17	-	-	X6CrTi12
Austenitic Stainless Steel	304	1.4301	X5 CrNi 18 9	304 S 15	2332	F.3551	X5CrNi18 10
	305	1.4303	X5 CrNi 18 12	305 S 19	-	-	X8CrNi19 10
	303	1.4305	X12 CrNiS 18 8	303 S 21	2346	F.3508	X10CrNiS 18 09
	304L	1.4306	X2 CrNiS 18 9	304 S 12	2352	F.3503	X2CrNi18 11
	301	1.4310	X12 CrNi 17 7	-	2331	F.3517	X12CrNi17 07
	304	1.4350	X5 CrNi 18 9	304 S 31	2332	F.3551	X5CrNi18 10
	304	1.4350	X5 CrNi 18 9	304 S 31	2333	F.3551	X5CrNi18 10
	304LN	1.4311	X2 CrNiN 18 10	304 S 62	2371	-	-
	316	1.4401	X5 CrNiMo 18 10	316 S 16	2347	F.3543	X5CrNiMo17 12
	316L	1.4404	-	316 S 12/13/14/22/24	2348		X2CrNiMo17 12
	316LN	1.4429	X2 CrNiMoN 18 13	-	2375	-	-
	316L	1.4435	X2 CrNiMo 18 12	316 S 12/13/14/22/24	2353	-	X2CrNiMo17 12
	316	1.4436	-	316 S 33	2343	-	X8CrNiMo 17 13
	317L	1.4438	X2 CrNiMo 18 16	317 S 12	2367	-	X2CrNiMo18 16
	329	1.4460	X3 CrNiMoN 27 5 2	-	2324	F.3309	-
	321	1.4541	X10 CrNiTi 18 9	321 S 12	2337	F.3553	X6CrNiTi18 11
	347	1.4550	X10 CrNiNb 18 9	347 S 17	2338	F.3552	X6CrNiNb18 11
	316Ti	1.4571	X10 CrNiMoTi 18 10	320 S 17	2350	F.3535	X6CrNiMoTi 17 12
	309	1.4828	X15 CrNiSi 20 12	309 S 24	-	-	X16 CrNi 24 14
	330	1.4864	X12 NiCrSi 36 16	-	-	-	-
Duplex Stainless Steel	S32750	1.4410	X 2 CrNiMoN 25 7 4	-	2328	-	-
	S31500	1.4417	X 2 CrNiMoSi 19 5	-	2376	-	-
	S31803	1.4462	X 2 CrNiMoN 22 5 3	-	2377	-	-
	S32760	1.4501	X 3 CrNiMoN 25 7	-	-	-	-
	630	1.4542	X5CrNiCNb16-4	-	-	-	-
	A564/630	-	-	-	-	-	-

Capabilities of Investment Casting Foundry:
• Max Size: 1,000 mm × 800 mm × 500 mm
• Weight Range: 0.5 kg – 100 kg
• Annual Capacity: 2,000 tons
• Bond Materials for Shell Building: Silica Sol, Water Glass and their mixtures.
• Tolerances: On Request.

Advantages of Investment Casting Components:
- Excellent and smooth surface finish
- Tight dimensional tolerances.
- Complex and intricate shapes with design flexibility
- Capability to cast thin walls therefore a lighter casting component
- Wide selection of cast metals and alloys (ferrous and non-ferrous)
- Draft is not required in the molds design.
- Reduce the need for secondary machining.
- Low material waste.

Materials for Investment Casting Process at RMC Foundry
Category	China Grade	US Grade	Germany Grade
Ferritic Stainless Steel	1Cr17, 022Cr12, 10Cr17,	430, 431, 446, CA-15, CA6N, CA6NM	1.4000, 1.4005, 1.4008, 1.4016, GX22CrNi17, GX4CrNi13-4
Martensitic Stainless Steel	1Cr13, 2Cr13, 3Cr13, 4Cr13,	410, 420, 430, 440B, 440C	1.4021, 1.4027, 1.4028, 1.4057, 1.4059, 1.4104, 1.4112, 1.4116, 1.4120, 1.4122, 1.4125
Austenitic stainless steel	06Cr19Ni10, 022Cr19Ni10, 06Cr25Ni20, 022Cr17Ni12Mo2, 03Cr18Ni16Mo5	302, 303, 304, 304L, 316, 316L, 329, CF3, CF3M, CF8, CF8M, CN7M, CN3MN	1.3960, 1.4301, 1.4305, 1.4306, 1.4308, 1.4313, 1.4321, 1.4401, 1.4403, 1.4404, 1.4405, 1.4406, 1.4408, 1.4409, 1.4435, 1.4436, 1.4539, 1.4550, 1.4552, 1.4581, 1.4582, 1.4584,
Precipitation Hardening Stainless Steel	05Cr15Ni5Cu4Nb, 05Cr17Ni4Cu4Nb	630, 634, 17-4PH, 15-5PH, CB7Cu-1	1.4542
Duplex Stainless Steel	022Cr22Ni5Mo3N, 022Cr25Ni6Mo2N	A 890 1C, A 890 1A, A 890 3A, A 890 4A, A 890 5A, A 995 1B, A 995 4A, A 995 5A, 2205, 2507	1.4460, 1.4462, 1.4468, 1.4469, 1.4517, 1.4770
High Mn Steel	ZGMn13-1, ZGMn13-3, ZGMn13-5	B2, B3, B4	1.3802, 1.3966, 1.3301, 1.3302
Tool Steel	Cr12	A5, H12, S5	1.2344, 1.3343, 1.4528, GXCrMo17, X210Cr13, GX162CrMoV12
Heat Resistant Steel	20Cr25Ni20, 16Cr23Ni13, 45Cr14Ni14W2Mo	309, 310, CK20, CH20, HK30	1.4826, 1.4828, 1.4855, 1.4865
Nickle-base Alloy		HASTELLY-C, HASTELLY-X, SUPPER22H, CW-2M, CW-6M, CW-12MW, CX-2MW, HX(66Ni-17Cr), MRE-2, NA-22H, NW-22, M30C, M-35-1, INCOLOY600, INCOLOY625	2.4815, 2.4879, 2.4680
Aluminum Alloy	ZL101, ZL102, ZL104	ASTM A356, ASTM A413, ASTM A360	G-AlSi7Mg, G-Al12
Copper Alloy	H96, H85, H65, HPb63-3, HPb59-1, QSn6.5-0.1, QSn7-0.2	C21000, C23000, C27000, C34500, C37710, C86500, C87600, C87400, C87800, C52100, C51100	CuZn5, CuZn15, CuZn35, CuZn36Pb3, CuZn40Pb2, CuSn10P1, CuSn5ZnPb, CuSn5Zn5Pb5
Cobalt-base Alloy		UMC50, 670, Grade 31	2.4778

INVESTMENT CASTING TOLERANCES
Inches		Millimeters
Dimension	Tolerance	Dimension	Tolerance
Up to 0.500	±.004″	Up to 12.0	± 0.10mm
0.500 to 1.000”	±.006″	12.0 to 25.0	± 0.15mm
1.000 to 1.500”	±.008″	25.0 to 37.0	± 0.20mm
1.500 to 2.000”	±.010″	37.0 to 50.0	± 0.25mm
2.000 to 2.500”	±.012″	50.0 to 62.0	± 0.30mm
2.500 to 3.500”	±.014″	62.0 to 87.0	± 0.35mm
3.500 to 5.000”	±.017″	87.0 to 125.0	± 0.40mm
5.000 to 7.500”	±.020″	125.0 to190.0	± 0.50mm
7.500 to 10.000”	±.022″	190.0 to 250.0	± 0.57mm
10.000 to 12.500”	±.025″	250.0 to 312.0	± 0.60mm
12.500 to 15.000	±.028″	312.0 to 375.0	± 0.70mm

Value Added Services on Engineering and Manufacturing:

Services	Description
Surface Treatment Services	Powder Coating, Anodization, Electrophotesis, Chrome Plating, Painting, Sand blasting, Nickel Plating, Zinc Plating, Blacking, Polishing, Bluing, Geormet, Zintek, etc.
CNC Precision Machining Services	Lathing, Milling, Turning, Honing, Drilling, Boring, Tapping, Wire Electrode Cutting, Grinding…etc.
Inspection and Quality Control	Spectrum Analyzer, CMM, Hardness Tester, Tensile Strength Tester, Yild Strentgh Testor, Sealing Pressure Tester, Carbon Sulfur Analyzer, Metallurgical Microscopy, Press Force Tester…etc.

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