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ASTM 420 , 420 stainless steel , ASTM 420 steel

ASTM 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 good ductility in the annealed condition but is capable of being hardened up to Rockwell Hardness 50HRC, the highest hardness of the 12 per cent chromium grades. Its best corrosion resistance is achieved when the metal is hardened and surface ground or polished.
 

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 - - -

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

Bebon International is a professional ASTM 420 stainless steel exporter and a steel Stockist in china. Any need in ASTM 420 stainless steel Chemical Composition ,Mechanical Properties and price , please feel free to contact us by email or calling to us.

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