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ASTM A276 Stainless Steel Bar 420j2 Forged Round Shafts 30cr13 130mm

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ASTM A276 Stainless Steel Bar 420j2 Forged Round Shafts 30cr13 130mm

Name: ASTM A276 Stainless Steel Bar 420j2 Forged Round Shafts 30cr13 130mm
Brand: MITTEL TISCO BAO STEEL
Price: 1500 USD

Brand Name : MITTEL TISCO BAO STEEL

Model Number : 420J2 3Cr13

Certification : ISO,BV,SGS

Place of Origin : China(mainland)

MOQ : 1 ton

Price : 1500-4000 USD/Ton

Payment Terms : Western Union, L/C, T/T

Supply Ability : 500 ton/Month

Delivery Time : 5-15 days according to the quantity

Packaging Details : standard export seaworthy packing or as required

surface : bright

length : 4-5m

grade : 3Cr13 420J2

Type : Round

Application : Construction

Standard : ASTM

Shape : Round

Dimensions : 5.5mm-500mm

Packing : Standard Seaworthy Package

Price term : CIF CFR FOB Ex-Work

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ASTM A276 420j2 Forged Round Shafts 30cr13 130mm Stainless Steel Bar Black

INTRODUCTION

Alloy 420 is a hardenable, martensitic stainless steel that is a modification of 410. Similar to 410, it contains a minimum of 12% chromium, just sufficient enough to give corrosion resistant properties.

420 has higher carbon content than 410 which is designed to optimize strength and hardness characteristics. It has good ductility it the annealed condition but is capable of being hardened up to Rockwell hardness 50 HRC, the highest hardness of the 12% chromium grades. Due to its hardening properties, 420 is not often welded, although it is possible.

Martensitic stainless steels are designed for high hardness and sometimes other properties are to some degree compromised. Corrosion resistance is lower than the common austenitic grades and their useful operating range is limited by their loss of ductility at sub-zero temperatures and loss of strength by over-tempering at elevated temperatures. Its best corrosion resistance is achieved when the metal is hardened and surface ground or polished.

APPLICATIONS

420 is used for a variety of applications where good corrosion and outstanding hardness is necessary. It is not usually used at temperatures exceeding 800oF (427oC) due to quick hardening and loss of corrosion resistance. Examples of applications that use 420 include:

Cuttery
Knife blades
Surgical instruments
Needle valves
Shear blades
Scissors
Hand tools

Steel Grade	420 / 420F / 2Cr13 / 3Cr13	Application	Mentioned above
Shape	Round Bar	Standard	GB, ASTM, DIN,JIS
Dimension	Φ4-800 mm; length below 10m	Surface	Black, Bright, Polished, Peeled
Technique	Cold drawn; Hot rolled; Forged	Ultrasonic Test	100% UT Passed

DELIVERY CONDITIONS

	Diameter (mm)
Cold drawn	4-60
Peeled	30-100
Grinded	4-600
Turned	130-800
Hot Rolled	20-280
Hot Forged	130-800

EQUIVALENT GRADES OF ASTM 420 / 420F

JIS G4303: SUS420J1/SUS420J2
ASTM/ASME: UNS S42000
EURONORM: X20Cr13/ X30Cr13
DIN: 1.4021/1.4028

CHEMICAL COMPOSITION (%)

420

≤

0.15

≤

1.00

≤

1.00

≤

0.040

≤

0.030

12.00

14.00

2Cr13

0.16

0.25

≤

1.00

≤

1.00

≤

0.040

≤

0.030

12.00

14.00

3Cr13

0.26

0.35

≤

1.00

≤

1.00

≤

0.040

≤

0.030

12.00

14.00

MECHANICAL PROPERTIES

Tempering Temperature	Tensile Strength ksi (min)	Yield Strength 0.2% ksi (min)	Elongation %	Hardness (Brinell) MAX
Annealed	655	345	25	214 max
399°F(204°C)	1600	1360	12	444
600°F(316°C)	1580	1365	14	444
800°F(427°C)	1620	1420	10	461
1000°F(538°C)	1305	1095	15	375
1099°F(593°C)	1035	810	18	302
1202°F(650°C)	895	680	20	262

Grade	Tensile Strength ksi (min)	Yield Strength 0.2% ksi (min)	Elongation %	Hardness (Brinell) MAX
2Cr13/20Cr13	640	440	20	223
3Cr13/30Cr13	735	540	12	235

RESISTANCE

Corrosion Resistance:

Less resistant than the austenitic grades and the 17% chromium ferritic alloys
Good resistance in the hardened condition to the atmosphere, foods, fresh water, and mild acids
Resistance lowered in the annealed condition
Best with a smooth surface finish

Heat Resistance:

Not recommended for use above the relevant tempering temperature because of reduction in mechanical properties
Scaling temperature is approximately 1202oF (650oC)

PROCESSING

Machinability

Tough, stringy chip build-up.
Similar to machining some of the high carbon tool steel

Welding

Not commonly welded due to air hardening characteristics.
Welding may be performed after preheating to 300-400 F
Post weld tempering at temperature for 2 hours

Hot Working

Recommended to bring temperatures slowly up to 1400, then on to 2000-2200 F
Furnace cool slowly to avoid cracking, after furnace working
Reheating is necessary to keep working temperature above 1600 F.

Cold Working

Can withstand only minor cold work.
Radical forming operations will result in cracking.

Annealing

Anneal at temperatures between 1550-1650 F (843-900 C)
Allow for slow furnace cooling.

Tempering

Temper at temperatures of 300-400 F
Air cool for maximum hardness and corrosion resistance.

Hardening

Soak at 1850-1950 F to quench in heated oil.

ASTM A276 Stainless Steel Bar 420j2 Forged Round Shafts 30cr13 130mm

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