20Cr Carburizing steel round bar Delivery status

20Cr Carburizing steel round bar has a higher strength and hardenability when compared with 15Crc, the critical quenching in oil diameter of 4 ~ 22mm, the water critical quenching diameter of 11 ~ 40mm, 20Cr Carburizing steel round bar cold plastic strain is high, in the cold state drawing.

20Cr steel round bar is mostly used for higher manufacturing center portion strength requirements to withstand the wear surface, a cross-sectional shape in 30mm or less complex and less load carburizing parts (oil quenching), such as: machine transmission gears, gear shafts, cams , worm, piston pins, claw clutch

20Cr steel round bar chemical composition

C: 0.18 ~ 0.24 Si: 0.17 ~ 0.37 Mn: 0.50 ~ 0.80 Cr: 0.70 ~ 1.00 S: allow the residual content ≤0.035 P: allow the residual content ≤0.035 Ni: to allow the residual content ≤0.30 Cu: to allow the residual content of ≤0.30 Mo: allow the residual content ≤0.15

20Cr Carburizing steel round bar Mechanical Properties

Sample blank dimensions (mm): 15

Heat treatment:

The first quenching temperature (℃): 880; coolant: water, oil

Second quenching temperature (℃): 780 ~ 820; coolant: water, oil

Tempering heating temperature (℃): 200; coolant: water, air

Tensile strength (σb / MPa): ≥835

Yield point (σs / MPa): ≥540

Elongation rate (δ5 /%): ≥10

Section shrinkage (ψ /%): ≥40

Impact energy (Aku2 / J): ≥47

Brinell hardness (HBS100 / 3000) (annealing or tempering state): ≤179 [2]

Delivery status: to heat treatment (normalizing, annealing, or tempering) or without heat treatment delivery

20Cr Carburizing steel round bar is the main product Bebon international operations.My company has been committed to providing the best quality and the best price for 20Cr steel round bar .If you beleve us,if you need Carburizing steel round bar.Pls contact us freely.

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