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EDRO #20Free Machining Carbon Steel
General Properties

Typical analysis %

C
.14/.22

MN
1.00/1.30

P
.040max

S
.24/.33

SI
.10/.40

Delivery condition

149 H.B.

Color code

Pink

EDRO #20 is a mild carbon steel stocked in as rolled condition.

EDRO #20™ is characterized by:

  • Excellent machinability
  • Responds to surface hardening
  • Ready welded
  • Good dimensional stability
  • Manufactured in the USA
Applications
  • Rubber molds - V Belt mold rings, gears, cams, sprockets, jigs, and fixtures

PHYSICAL DATA

These are typical mechanical properties for a 1" thick platte in the as rolled condition.

Tensile Strength - psi

72,000

Yield Strength - psi

48,000

Elongation in 2"

30%

Reduction of Area

60%

HARDENING

EDRO #20™ responds to any of the standard carburizing and subsequent hardening methods used for such grades as 1018.

Normalize 1650° - 1750°F

Anneal 1550° - 1600°F

Stress Relieve 1250° - 1300°F

Carburize 1650° - 1700°F

Harden 1450° - 1500°F (water)

MACHINABILITY

EDRO #20™ machines at speeds up to 40% higher than other steels with comparable carbon content. EDRO #20™ is machined at cutting speeds of up to 170 surface feet per minute.