Professional AISI 1035/S35C Carbon Steel forged steel rings
Applications
The following are the major applications of AISI 1035 carbon steel:
Introduction
Carbon steels have carbon as the key alloying element in their
composition. They also contain up to 0.4% silicon and 1.2%
manganese. In addition, the residual elements such as copper,
molybdenum, aluminium, chromium and nickel are present in these
steels.
AISI 1035 is a water resisting carbon steel whose wear resistance
and hardenability are increased by the addition of small quantity
of chromium.
The following sections will discuss in detail about AISI 1035
carbon steel.
| Category | Steel | | Class | Carbon steel | | Type | Standard | | Designations | France: AFNOR CC 35
Germany: DIN 1.0501
Italy: UNI C 35
Sweden: SS 1550
United Kingdom: B.S. 060 A 35 , B.S. 080 A 32 , B.S. 080 A 35 , B.S. 080 A 37 ,
B.S. 080 M 36
United States: AMS 5080 , AMS 5080D , AMS 5082 , AMS 5082A , ASTM A108 , ASTM
A29 , ASTM A510 , ASTM A519 , ASTM A544 , ASTM A545 , ASTM A546 ,
ASTM A576 , ASTM A682 , FED QQ-S-635 (C1035) , FED QQ-S-700 (1035)
, SAE J403 , SAE J412 , SAE J414 , UNS G10350 |
| Composition |  | |
| Element | Weight % | |
C | 0.32-0.38 | |
Mn | 0.60-0.90 | |
P | 0.04 (max) | |
S | 0.05 (max) |
| Mechanical Properties | | |
| Properties | Conditions | | T (°C) | Treatment | | Density (×1000 kg/m3) | 7.7-8.03 | 25 | | | Poisson's Ratio | 0.27-0.30 | 25 | | | Elastic Modulus (GPa) | 190-210 | 25 | | | Tensile Strength (Mpa) | 485 | 25 | cold drawn (round bar (50-75 mm)) more | | Yield Strength (Mpa) | 415 | | Elongation (%) | 10 | | Reduction in Area (%) | 30 | | Hardness (HB) | 143 | 25 | cold drawn (round bar (50-75 mm)) more |
|
HEAT TREATMENT
Heat treatment is carried out on this grade to render it suitable
for machining and to impart to it specified mechanical properties.
ANNEALING
Full annealing of small C1035 forgings is carried out between 1550
and 1625 º F (840 – 890 º C) followed by furnace cooling at 50 º F
(10 º C) per hour, to 1200 º F (650 º C) and air cooling.
NORMALIZING
The normalizing temperature range for this grade is typically 1600
– 1650 º F (870 – 900 º C,) Normalizing is followed by cooling in
still air. When forgings are normalized before hardening and
tempering or other heat treatment, the upper range of the
normalizing temperature is used. When normalizing is the final
treatment, the lower temperature range is used.
HARDENING
Hardening of this grade is carried out from an austenitizing
temperature of 1525 – 1575 º F (830 – 860 º C) and oil or water
quenching.
Flame and induction hardening may be carried out by heating quickly
to the desired case depth and quenching in water or oil. This
should be followed by a tempering treatment at 300 – 400 º F (150 –
200 º C) to reduce stresses in the case without affecting its
hardness. A surface hardness of Rc 50 may be obtained by this
treatment.
TEMPERING
Tempering after normal hardening and oil or water quenching is
carried out at 750 – 1260 º F (400 – 680 º C) to give the required
mechanical properties as determined by practical experience.
MACHINABILITY
Machinability of C1035 is good providing the full annealing cycle
described above is used, ensuring a coarse lamellar pearlite to
coarse spheroidite microstructure.
WELDABILITY
This grade is readily welded with the correct procedure. Welding in
the through-hardened or flame or induction-hardened conditions is
not recommended.
Low-hydrogen electrodes are recommended together with preheat at
300 – 500 º F (150 – 260 º C.) to be maintained during welding,
Cool slowly and stress relieve where possible.
