DIN1.6773 35ncd16 36nicrmo16 Alloy Structural Steel chrome molybdenum steel

Grade

C

Mn

P

S

Si

Cr

Ni

Mo

1.6773

0.32-

0.39

0.50-

0.80

0.025 max

0.025 max

0.40

max

1.60-

2.00

3.60-

4.10

0.25-

0.45

>>>Heat Treatment:

Soft Annealing: Heat to 650-680℃, cool slowly. This will produce a maximum Brinell hardness of 269.

Normalizing: Temperature: 850-880℃.

Hardening: Harden from a temperature of 835-865℃, 855-885℃ followed by oil or quenching.

Forging: Hot forming temperature: 1050-850℃.

>>>Steel Grades

 DIN1.6773,

35NCD16, 

36NiCrMo16

Mill′s test certificate:

EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.

Product Description:

Quench and tempering special NiCrMo steel, almost equivalent to 34NiCrMo16 steel standardized according to UNI7874/7845, characterized by very high tensile strength together with good toughness. It is usable in the hardened and stress relieved state. It can harden in the air up to thicknesses equal to 90 mm. It is suitable to the manufacture of components of maximum thickness equal to 300 mm strongly stressed and even with a complicated geometry (shafts, torsion shafts, axles, levers, connecting rods, rocker arms). To improve the workability at the machines tools it can be booked with the addition of Ca or re-sulphurized (S60,1%).
The use of re-sulphurized steels involves a worsening of the tensile strength characteristics along the transversal, of the
impact strength and of the fatigue strength. Advised austenitic grain dimension > 5 according to UNI 3245 (similar to ASTM E112-82)

Process

Diameter

(mm)

Tensile Strength

 Rm (Mpa)

Yield Strength Rp0.2 (Mpa)

Elongation A5 (%)

Area Reduction Ratio C (%)

Impact

 Value Kv (J) Room Temperature

Hardness

 (HB)

QUENCHED AND TEMPERED

16 max

1250-1450

1050 min

9 min

40 min

/

368-424

QUENCHED AND TEMPERED

16-

40

1250-

1450

1050 min

9 min

40 min

30 min

368-424

QUENCHED AND TEMPERED

40-

100

1100-

1300

900 min

10 min

45 min

35 min

324-382