Cangzhou Boyou Precision Machinery Manufacturing Co., Ltd

ELEMENT

COMPOSITION, %

Carbon

0.35 max

Manganese

0.60-1.05

Phosphorus

0.035 max

Sulfur

0.040 max

Silicon

0.10-0.35

Copper

0.40 max (1)

Nickel

0.40 max (1)

Chromium

0.30 max (1-2)

Molybdenum

0.12 max (1-2)

Vanadium

0.08 max

(1) The sum of copper, nickel, chromium, molybdenum and vanadium shall not exceed 1.00%.
(2) The sum of chromium and molybdenum shall not exceed 0.32%.
Note:
For each reduction of 0.01% below the specified carbon maximum (0.35%), an increase of 0.06% manganese above the specified maximum (1.05%) will be permitted up to a maximum of 1.35%.