Steel used in Refrigerator

Refrigerator is an important kitchen appliance. It is made of relatively simple material and is used in a gentle environment. The tendency is to use thinner sheet and to make products with larger volume. Currently the applied materials include cold rolled steel, hot dip galvanized steel, prepainted steel, leminated steel, stainless steel and Al-Zn alloy coated steel.

1. Back Cover

Part requirement: Gentle working environment, flat and straight, no special functional requirement.
Material requirement: Flat and straight, easy for assembly.
Recommended materials:

Part No.	Part No.	Type	Grade	Size(mm)	Specialty
1	Back colver	Al-Zn alloy-coated steel	DX51D+AZ	0.3-0.33	Anti-fingerprinting; Evenly Zinc spangle; Embossed
1	Back colver	Hot dip galvanized steel	DX51D+Z	0.3-0.33	Anti-fingerprinting; Embossed

2. U case

Part requirements: Proper stiffness, movable, flat and straight, proper hardness and no deformation after foaming.
Material requirements: Flat and straight, thickness ≥0.35mm, Hardness ≥40.
Recommended materials:

Part No.	Part No.	Type	Grade	Size(mm)	Specialty
2	U Case	General cold rolled high strength steel	BJD300	0.35-0.4	YS ≥300MPa Spray painting after parkerizing
		Prepainted Steel	TSECD	0.4-0.5	Oil-resistant coating; Anti-bacterial coating
			TDX52+Z	0.4-0.5	Oil-resistant coating; Anti-bacterial coating
			TDX51D+AZ	0.45-0.5

3. Hinge

Part requirements: Proper strength and stiffness, no deformation when bearing weight.
Material requirements: Flat; YS≥200MPa
Recommended materials:

Part No.	Part No.	Type	Grade	Size(mm)	Specialty
3	Hinge	General cold rolled steel	SPCC	3.0	Available after electro-galvanization

4. Door case

Part requirements: Flat and straight, proper hardness and no deformation after foaming
Material requirements: Flat and straight hardness≥40
Recommended materials:

Part No.	Part No.	Type	Grade	Size(mm)	Specialty
4	Door case	General cold rolled high strength steel	BJD300	0.35-0.4	YS ≥300MPa Spray painting after parkerizing
		Prepainted Steel	TSECD	0.4-0.5	Oil-resistant coating; Anti-bacterial coating
			TDX52+Z	0.4-0.5	Oil-resistant coating; Anti-bacterial coating
			TDX51D+AZ	0.45-0.5

5. Bottom plate

Part requirements: No fatigue cracking under vibration; Proper stiffness for bearing weight.
Material requirements: Good drawing quality;Proper stiffness; Anti-fatigue
Recommended materials:

Part No.	Part No.	Type	Grade	Size(mm)	Specialty
5	Bottom plate	Hot-dip Galvanized steel	DX51D+Z	1.0-2.0	Anti-Corrosion Available after spray painting

6. Compressor Motor

Part requirements:Quiet; Energy-efficient;
Material requirements: Small thickness tolerance; high magnetic induction; Low iron loss; Good drawing quality; Flat and straight.

Recommended materials:

Part No.	Part No.	Type	Grade	Size(mm)	Specialty
6	Compressor Motor	Electrical steel	B50AE-2	0.5	High-efficiency Low energy consumption
			B50A1300
			B50A700
			B50A300

7. Compressor Case

Part requirements: Improved welding and coating property;Pressure-resistant
Material requirements: Deep drawing quality; Uniform performance.
Recommended materials:

Part No.	Part No.	Type	Grade	Size(mm)
7	Compressor Case	Pickled steel	SPHD,SPHE	2.6-4

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Steel used in Refrigerator