420 Stainless Steel Bar

1. Standard: GB ASTM, JIS, etc

2. Grade: Type 420 Stainless Steel

3. Diameter: 2mm-300mm

4. Shape Manufactured: Flat Bar, Square Bar,
Round Bar,Hex Bar and special shapes.

5. Length: 2.00m-6.00m or as customers’ request

6. Surface finish: #4 polish, #6 polish, #7 polish, and #8 mirror finish

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SPECIFICATION OF 420 STAINLESS STEEL BAR

Grade 420 stainless steel is a higher carbon version of 410; like most non-stainless steels it can be hardened by heat treatment. It contains a minimum of 12 per cent chromium, just sufficient to give corrosion resistance properties. It has goodductility in the annealed condition but is capable of being hardened up to Rockwell Hardness 50HRC, the highest hardness of the 12 percent chromium grade. Best corrosion resistance is when the metal is hardened and surface ground or polished.

Yieh United Co. has the stainless steel bar products you need positioned in large depots to meet your demand. Yieh United Co. carries processed bars not only in different types, but also in various grades includes special free-machining grades, food industry-approved grades and materials includes low-sulfur material and dual-certified material.

The normal stock of stainless bar is around 20,000 tons, which ensure the delivery time and flexible choice for our customers.

Product Name	Grade	Size	Finish	Quote
Stainless Steel Round Bar	420	Dia: 1.5mm-660mm	Black & Pickled & Bright	Get A Quote
Stainless Steel Flat Bar	420	thickness: 3mm-25mm width: 12mm-305mm stock length: 2mm-10mm	Black & Pickled & Bright	Get A Quote
Stainless Steel Square Bar	420	thickness:4mm-100mm (larger sizes available upon request)	Black & Pickled & Bright	Get A Quote
Stainless Steel Hex bar	420	thickness:4mm -76mm (larger sizes available upon request)	Cold rolled, bright surface, some need to do heattreatment properly according to customer’s request.	Get A Quote

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420 STAINLESS STEEL BAR PROCESSING

You can select a number of processing options to produce stainless steel bars to their exact specification, reducing material costs, production time, scrap and internal handling.

Long Porduct Processing Service Overview
Bar Cutting	Thickness range is 1/16'' to 28'' diameter. Products cut include round bar, flat bar, hex bar, square bar, tubing and hollow bar, pipe, angles, channles, beams and tees,
Bar Production Cutting	Yieh United can provide production cutting for product diameter up to 4''. We utilize our production equipment to achieve these precision cuts with tight tolerances. All products can be cut to exact requirements.
Bar Polishing	Round bar, square bar, hex & flat bar, angles, other shapes including tubular products have OD & ID polishing available.

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VALUE ADDED FOR 420 STAINLESS STEEL BAR

• Polishing: can polish any stainless steel bar item to a #4 polish, #6 polish, #7 polish, or a #8 mirror finish. Stainless steel polished bar can also be cut to size.
• Heatreating & Annealing: some grades of stainless steel bars can be heatreated to change the mechanical properties. Precipitation hardening stainless steel such as 17-4ph can be heattreated. 410 stainless steel bar can also be heatreated.
• Multiple cutting stations allow us to ship cut stainless bar to size when you need it.
• Grinding and polishing available upon request.
• Special heat treat requirement can also be supplied.
• Stainless round bars can also be polished or center-less ground to exact tolerance.

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Chemical Composition

Typical compositional ranges for grade 420 stainless steel are given in table 1.

Table 1. Composition ranges for 420 grade stainless steel

Grade		C	Mn	Si	P	S	Cr	Mo	Ni	N
420	min. max.	0.15 -	- 1.00	- 1.00	- 0.040	- 0.030	12.0~14.0	-	-	-

Mechanical Properties

Typical mechanical properties for grade 420 stainless steels are given in table 2.

Table 2. Mechanical properties of 420 grade stainless steel

Tempering Temperature (°C)	Tensile Strength(MPa)	Yield Strength 0.2% Proof (MPa)	Elongation (% in 50mm)	Hardness Brinell(HB)	Impact Charpy V (J)
Annealed *	655	345	25	241 max	-
204	1600	1360	12	444	20
316	1580	1365	14	444	19
427	1620	1420	10	461	#
538	1305	1095	15	375	#
593	1035	810	18	302	22
650	895	680	20	262	42
* Annealed tensile properties are typical for Condition A of ASTM A276; annealed hardness is the specified maximum.# Due to associated low impact resistance this steel should not be tempered in the range 425-600°C

Physical Properties

Typical physical properties for annealed grade 420 stainless steel are given in table 3.

Table 3. Physical properties of 420 grade stainless steel in the annealed condition

Grade	Density (kg/m3)	Elastic Modulus (GPa)	Mean Coefficient of Thermal Expansion (mm/m/°C)			Thermal Conductivity (W/m.K)		Specific Heat 0-100°C (J/kg.K)	Electrical Resistivity (nW.m)
			0-100°C	0-315°C	0-538°C	at 100°C	at 500°C
420	7750	200	10.3	10.8	11.7	24.9	-	460	550

Grade Specification Comparison

Approximate grade comparisons for 420 stainless steels are given in table 4.

Table 4. Grade specifications for 420 grade stainless steel

Grade	UNS No	Old British		Euronorm		Swedish SS	Japanese JIS
		BS	En	No	Name
420	S42000	420S37	56C	1.4021	X20Cr13	2303	SUS 420J1
These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.

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