35NCD16 Anneal Alloy Steel Bar
Type:Plate/Round bar/Flat bar
Delivery condition: Annealed black surface/Turned bright surface
Products Description
35NCD16 Alloy Steel Bars is a versatile specification. The applications of this material are numerous and includes the following:
In Engineering: Ultra high tensile applications, shafts, gears, bolts, spline shafts, crusher shafts, eccentric shafts, hard wearing bushes and high impact pistons
In mining: Rock drill, knock off bits, mill hammers, cyclone plates, high tensile mechanical and thermal shock applications
In Tooling: Plastic extrusion dies, die bolster rings and punches
35NCD16 Alloy Steel Features and classifications
35NCD16 is an expensive steel specification not just because of the high alloying elements but also the refining methods utilised to keep the hydrogen (H) content of the steel to less than two parts per million, (H = ≤ 2PPM). It is more costly than other B.S. 970 specifications
It is 1500 MPa minimum tensile steel , air hardening in sections up to 65mm diameter.Specially recommended for intricately shaped parts where an air hardening steel is preferred
35NCD16 alloy steel can be case hardened , can be carburised and induction hardened or shorterised (flame hardened).
Heat treatment temperatures, including rate of heating, cooling and soaking times will vary due to factors such as the shape and size of each EN30B steel component.
Products parameters
|
Equivalent
Steel Grade
|
EN
|
DIN
|
BS
|
NF
|
| 36CrNiMo16 | 1.6773 | 835M30/EN30B | 35NCD16 |
Chemical composition % of 35NCD16 steel
|
Chemical elements |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Ni |
|
%, by mass |
0,32 - 0,39 |
0,40 |
0,30 - 0,60 |
max 0.025 |
max 0,025 |
1,60-2,00 |
0,25-0,45 |
3,60-4,10 |
|
Permissible deviation |
± 0.02 |
± 0,03 |
± 0,04 |
+ 0.005 |
+ 0.005 |
± 0.05 |
± 0.03 |
± 0.07 |
35NCD16 Steel Mechanical properties in the quenched and tempered condition
|
|
d ≤ 16mm oder t ≤ 8mm |
16mm < d ≤ 40mm 8mm < t ≤ 20mm |
40mm < d ≤ 100mm 20mm < t ≤ 60mm |
100mm < d ≤ 160mm 60mm < t ≤ 100mm |
160mm < d ≤ 250mm 100mm < t ≤ 160mm |
|
Re min (MPa) |
1050 |
1050 |
900 |
800 |
8000 |
|
Rm (MPa) |
1250-1450 |
1250-1450 |
1100-1300 |
1000-1200 |
1000-1200 |
|
A min. (%) |
9 |
9 |
10 |
11 |
11 |
|
Z min. (%) |
40 |
40 |
45 |
50 |
50 |
|
KV min. (J) |
30 |
30 |
35 |
45 |
45 |
|
Flat Bar Size
|
Round Bar Size(mm)
|
|||
|
Thickness
|
Width
|
Length
|
Diameter
|
Length
|
|
6-90
|
205-610
|
2000-6000
|
20-400
|
3000-6000
|
Product Picture
Our factory
Steel Making
Ingot Production
Forged Bars
Machinary
35NCD16 Alloy Steel Heat treatment
| Forging | Heat the steel carefully to the forging temperature of 1000-1100°C, soak well. After forging, cool slowly in a furnace to 100°C maximum and anneal immediately. |
| Annealing | To obtain the softest condition heat carefully to 630-650°C. Soak for a minimum of 2 hours, then cool in the furnace or in air. It is advisable to repeat this treatment to obtain the best machining characteristics. |
| Stress Relieving | Where the machining operations have been severe, we recommend stress relieving EN30B alloy steel before finish machining and hardening. Heat carefully to 630-650°C then cool in the furnace or in still air. |
| Hardening | Heat uniformly to 810-830°C and when thoroughly soaked at this temperature cool in air or quench in oil according to mass. Hardening from neutral salt baths will help to prevent scaling or decarburisation and is strongly recommended. Pre heat at 300-400°C, raise to the hardening temperature of 810-830°C, quench into salt standing at 300-320°C. Withdraw and cool in air. Alternatively, tools may be vacuum hardened. If desired, hardened and tempered tools can be cyanide hardened to give a shallow carburised case to die surfaces with increased hardness values up to Rockwell C56-60. Temper as soon as tools are hand-warm. |
| Tempering | Re heat to the relevant tempering temperature. Soak for at least 2 hours per 25mm of ruling section. Withdraw from the furnace and cool in still air. Tempering between 275-450°C is not advised as tempering within this range will reduce the impact value.
|
Delivery Condition
-EAF+(ESR) or EAF+LF+VD+(ESR)
-HOT rolled or Forged, Annealed
-Black surface or Machined surface (Peeled, Turned, Grinded)
-UT 100% passed
-Cutting service provided
-Third Party inspection is acceptable (SGS, BV etc.)
Annealed Maximum hardness:≤240 HB
Packing & Delivery
Packing & Delivery
-
The inner size of container is below:
-- 20ft GP: 5.8m(length) x 2.13m(width) x 2.18m(high)
-- 40ft GP: 11.8m(length) x 2.13m(width) x 2.18m(high)
-- 40ft HG: 11.8m(length) x 2.13m(width) x 2.72m(high)
Our Service
1. We are a specialized manufacturer. Competitive price and quality from our own factory .
2. Best service with 24 hour`s reply .
3. Flexible payment with T/T,L/C , etc .
4. Smooth production ability(1000tons/month).
5. Quick delivery and standard exporting package
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