35NCD16 1.6773 36NiCrMo16 Quenched Tempered Alloy Steel Round Bar
35NCD16 1.6773 36NiCrMo16 Quenched Tempered Alloy Steel Round Bar
35NCD16 1.6773 36NiCrMo16 Quenched Tempered Alloy Steel Round Bar
35NCD16 1.6773 36NiCrMo16 Quenched Tempered Alloy Steel Round Bar
Model
35NCD16 1.6773 36NiCrMo16

Item specifics

Delivery Condition
normalised and tempered/softened

Review

Description

35NCD16 1.6773 36NiCrMo16 QT Steel

 

1. Description and Application

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 E 112-82)

 

Our supply size :

Diameter : 80 to 600 mm ;

Length : 1000 to 9000 mm ;

 

Our capacity :

Delivery condition : Normalized, or Annealed, or Quenched and Tempered ;

Surface condition : Grounded, or Turned, or Polished

 

Our advantage :

1. High Quality, Reasonable Price

2. Over 40 Years Experience

3. ISO NQA Certificated Factory

4. Worldwide shipping

5. Emergency Orders and Fast Delivery

 

2. 35NCD16 All Grades Comparison

DIN

EN

ANFOR

1.6773

36NiCrMo16

35NCD16

 

3.Quality Standard

EN 10083 Steels for quenching and tempering. Technical delivery conditions for alloy steels
EN 10250 Open steel die forgings for general engineering purposes. Alloy special steels


4.Chemical Composition(%)

C

Mn

Si

P

S

Cr

Ni

Mo

0.32-0.39

0.50-0.80

0.40 max

0.025 max

0.025 max

1.60-2.00

3.60-4.10

0.25-0.45


5. Mechanical Properties (T=20°C if not differently stated)

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)

SOFT ANNEALED

/

912 max

/

/

/

/

269 max

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

QUENCHED AND TEMPERED

100-160

1000-1200

800 min

11 min

50 min

45 min

295-353

QUENCHED AND TEMPERED

160-250

1000-1200

800 min

11 min

50 min

45 min

295-353

 

6.HEAT TREATMENT:

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

Normalizing: Temperature: 850-880oC.

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

Tempering: 550 - 650℃

 

7.Forging:

Hot forming temperature: 1050-850oC.


8.Mill′s test certificate:

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