Factory wholesale Stainless Steel Investment Casting Supplier - Investment Casting Auto Part of Chrome Molybdenum 42CrMo4 Alloy Steel – RMC Foundry

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Factory wholesale Stainless Steel Investment Casting Supplier - Investment Casting Auto Part of Chrome Molybdenum 42CrMo4 Alloy Steel – RMC Foundry Detail:

Custom Chrome Molybdenum 42CrMo4 alloy steel investment casting products for lock hook of automobile with electrophoresis surface treatment.

42CrMo4 (1.7225) from specification of EN 10083-3, which is usually heat treated by QT (Queching + Tempering), is widely used to produce investment castings. it has high strength, high toughness, good hardenability, temper brittleness, high fatigue limit, good impact resistance after quenching and tempering, and good low temperature impact toughness. The equivalent grade of 42CrMo4 are 4140 (ASTM, USA) and 42CrMo (GB/T 3077, China)

Chemical Composition %
Country (Region)	Standard	Steel Name (Steel Number)	C	Si ≤	Mn	P ≤	S ≤	Cr	Mo
European Union	EN 10083-3	42CrMo4 (1.7225)	0.38-0.45	0.4	0.60-0.90	0.025	0.035	0.90-1.20	0.15-0.30

42CrMo4 steel properties at room temperature in the quenched and tempered condition.

Yield strength:
≥900 N/mm2 (d≤16mm, t≤8mm)
≥750 N/mm2 (16 < d ≤ 40mm, 8 < t ≤ 20mm)
≥900 N/mm2 (40 < d ≤ 100mm, 20 < t ≤ 60mm)
≥900 N/mm2 (100 < d ≤ 160mm, 60 < t ≤ 100mm)
≥900 N/mm2 (160 < d ≤ 250mm, 100 < t ≤ 160mm)

Tensile strength:
1100-1300 N/mm2 (d≤16mm, t≤8mm)
1000-1200 N/mm2 (16 < d ≤ 40mm, 8 < t ≤ 20mm)
900-1100 N/mm2 (40 < d ≤ 100mm, 20 < t ≤ 60mm)
850-950 N/mm2 (100 < d ≤ 160mm, 60 < t ≤ 100mm)
750-900 N/mm2 (160 < d ≤ 250mm, 100 < t ≤ 160mm)

Elongation: ≥ 10% (d≤16mm, t≤8mm)

Impact strength of longitudinal Charpy-V-notch test:
≥35J (16 < d ≤ 250mm, 8 < t ≤ 160mm)
≥11% (16 < d ≤ 40mm, 8 < t ≤ 20mm)
≥12% (40 < d ≤ 100mm, 20 < t ≤ 60mm)
≥13% (100 < d ≤ 160mm, 60 < t ≤ 100mm)
≥14% (160 < d ≤ 250mm, 100 < t ≤ 160mm)

42CrMo4+QT hardness in HRC: ≥53 (after flame or induction hardening)
42CrMo4 hardness in HBW: ≤255 (treated to improve shearability); ≤241 (soft annealed)

Carbon steel, low alloy steel, high alloy steel and tool steel castings are used in several industrial applications. With their numerous grades, steel and their alloys can be heat-treated to improve its yield and tensile strength and, adjust hardness or ductility to the engineer’s application needs or desired mechanical properties.

Chemical Composition of Some of Chrome Molybdenum Cast Steel
Steel Grade	C (%)	Si (%)	Mn (%)	Cr (%)	Mo (%)	P、S (%)
ZG20CrMo	0.17-0.25	0.20-0.45	0.50-0.80	0.50-0.80	0.40-0.60	≤0.035
ZG35CrMo	0.30-0.37	0.30-0.50	0.50-0.80	0.80-1.20	0.20-0.30	≤0.035
ZG40CrMo	0.35-0.45	0.17-0.45	0.50-0.80	0.80-1.10	0.20-0.30	≤0.04
ZG20Cr5Mo	0.15-0.25	≤0.50	≤0.60	4.00-6.00	0.50-0.65	≤0.04
ZG17CrMo	0.15-0.20	0.30-0.60	0.50-0.80	1.20-1.50	0.45-0.55	≤0.04

Using the investment casting process, RMC casting foundry is capable of meeting material specifications according to ASTM, SAE, AISI, ACI, DIN, EN, ISO, and GB standards. We have more than 100 different ferrous and non-ferrous alloys with which we cast parts using complex design criteria. Our dimensionally and geometrically complex investment castings are produced to net shape, minimizing the need for secondary machining.

Chromium-molybdenum cast steel is widely used in industrial fields with relatively high mechanical properties. The addition of molybdenum to chromium steel can increase the strength of steel castings without having a significant impact on the impact toughness of cast steel. Moreover, chromium-molybdenum cast steel has very good high temperature performance and creep resistance. After quenching and tempering or normalizing heat treatment, chromium-molybdenum cast steel can obtain excellent mechanical properties.

Molybdenum can improve the hardenability of cast steel and reduce the temper brittleness of cast steel. Chromium-molybdenum cast steel is used for large-section castings and steel castings that require deep hardening.

Investment Casting Technical Data at RMC Foundry
R & D	Software: Solidworks, CAD, Procast, Pro-e
R & D	Lead Time for Development and Samples: 25 to 35 days
Molten Metal	Ferritic Stainless Steel, Martensitic Stainless Steel, Austenitic stainless steel, Precipitation Hardening Stainless Steel, Duplex Stainless Steel
	Carbon Steel, Alloy Steel, Tool Steel, Heat Resistant Steel,
	Nickle-base Alloy, Aluminium Alloy, Copper-base Alloy, Cobalt-base Alloy
Metal Standard	ISO, GB, ASTM, SAE, GOST EN, DIN, JIS, BS
Material for Shell Building	Silica Sol (Precipitated Silica )
	Water Glass (Sodium Silicate)
	Mixtures of Silica Sol and Water Glass
Technical Parameter	Piece Weight: 2 gram to 200 kilo gram
	Max Dimension: 1,000 mm for Diameter or Length
	Min Wall Thickness: 1.5mm
	Casting Roughness: Ra 3.2-6.4, Machining Roughness: Ra 1.6
	Tolerance of Casting: VDG P690, D1/CT5-7
	Tolerance of Machining: ISO 2768-mk/IT6
	Inner Core: Ceramic Core, Urea Core, Water Soluble Wax Core
Heat Treatment	Normalizing, Tempering, Quenching, Annealing, Solution, Carburization.
Surface Treatment	Polishing, Sand / Shot Blasting, Zinc Plating, Nickel Plating, Oxidation Treatment, Phosphating, Powder Painting, Geormet, Anodizing
Dimension Testing	CMM, Vernier Caliper, Inside Caliper. Depth Gage, Height Gage, Go/No go Gage, Special Fixtures
Chemical Inspection	Chemical Compostion Analysis (20 chemical elements), Cleanliness Inspection, X-ray Radiographic Inspection, Carbon-Sulfur Analyser
Physical Inspection	Dynamic Balancing, Static Blancing, Mechanical Properties (Hardness, Yield Strength, Tensile Strength), Elongation
Production Capacity	More than 250 tons per month, more than 3,000 tons annually.