High Precision 416 Stainless Steel Bar / Stainless Steel Hexagonal
Bar / 416 Stainless Steel
Product Description:
| Product Name | stainless steel hexagon bar |
| Standard | JIS, AISI, ASTM, GB, DIN |
| Size | Diameter : S6-S65mm or as request |
| Length | Normal long 4M, Or as your request |
| Surface | Bright ,hairline finsh |
| Technics | cold drawn and polishing |
| Mainly Grade | 201 303 304 304L 316L 410 416 420 431 440(A B C) 17-4PH.etc |
| Application | construction field, ships building industry, petroleum & chemical
industries, war and electricity industries, food processing and
medical industry, boiler heat exchanger, machinery and hardware
fields ,etc. |
| Packing | Export standard or as customers' requirement |
| Delivery time | Within 15 working days, according to customers' quantities |
| Payment | L/C or T/T |
| MQQ | 1 Ton |
| Quality | High Quality.SGS inspection is accepted if needed |
| Productivity | 500 Tons/Month |
| Attention | We will supply you good quality and bottom price and first-class
service in china and hope to be your golden supplier |
Size of our hexagon stainless steel bar in stock:
| 201 304 316L stainless steel hexagon bar |
| Size | S6 S8 S10 S11 S12 S13 S14 S15 16 S17 S18 S19 S20 S21 S22 S24 S25
S26 S28 S29 S30 S31 S32 S33 S36 S38 S40 S41 S42 S46 S50 S55 S60 S65 |
Grade 416 steel is a free-machining stainless steel with a
machinability of 85%, highest of all stainless steels. With most of
the free-machining stainless steels, the machinability can be
improved by adding sulphur, which leads to the formation of
manganese sulphide inclusions. Addition of sulphur also reduces the
formability, weldability and corrosion resistance of 416 steels to
below that of grade 410. Because of their high machinability and
low cost, grade 416 steels are available in highly tempered,
hardened or unhardened forms.
Martensitic steels with high hardness are manufactured using
methods that require final hardening and tempering treatments. The
corrosion resistance of these steels is lower than that of
austenitic steels. Decrease in the ductility of martensitic steels
at sub-zero temperatures, and strength at high temperatures due to
over-tempering, are the two key factors that affect their operating
temperatures.
Key Properties
The following sections will discuss the properties of grade 416
steel bar products of ASTM A582. The specified properties may not
be similar to other forms such as forgings and wires.
Composition
The chemical composition ranges of grade 416 stainless steels are
given in the following table:
Table 1 - Composition ranges for grade 416 stainless steels
| Grade | C | Mn | Si | P | S | Cr | Mo |
| 416 | min. max. | - 0.15 | - 1.25 | - 1 | - 0.06 | 0.15 - | 12 14 | - 0.6 |
Mechanical Properties
The table below provides the mechanical properties of grade 416
stainless steels:
Table 2 - Mechanical properties of grade 416 stainless steels
| Tempering Temperature (°C) | Tensile Strength (MPa) | Yield Strength
0.2% Proof (MPa) | Elongation
(% in 50mm) | Hardness Brinell
(HB) | Impact Charpy V (J) |
| Annealed * | 517 | 275 | 30 | 262 | - |
| Condition T ** | 758 | 586 | 18 | 248-302 | - |
| 204 | 1340 | 1050 | 11 | 388 | 20 |
| 316 | 1350 | 1060 | 12 | 388 | 22 |
| 427 | 1405 | 1110 | 11 | 401 | # |
| 538 | 1000 | 795 | 13 | 321 | # |
| 593 | 840 | 705 | 19 | 248 | 27 |
| 650 | 796 | 670 | 17.5 | 253 | 38 |
* Annealed properties are typical for Condition A of ASTM A582.
** Hardened and tempered Condition T of ASTM A582 - Brinell
hardness is specified range, other properties are typical only.
# Tempering of this steel at temperatures of 400 to 580°C should be
avoided due to low impact resistance.
Physical Properties
The key physical properties of annealed grade 416 stainless steels
are tabulated below:
Table 3 - Physical properties of annealed grade 416 stainless steel
| Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion
(μm/m/°C) | Thermal Conductivity
(W/m.K) | Specific Heat 0-100°C
(J/kg.K) | Electrical Resistivity (nΩ.m) |
| 0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C |
| 416 | 7800 | 200 | 9.9 | 11 | 11.5 | 24.9 | 28.7 | 460 | 570 |
Grade Specification Comparison
The following table outlines the grade comparisons for 416
stainless steels:
Table 4 - Grade specifications for grade 416 stainless steels
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS |
| BS | En | No | Name |
| 416 | S41600 | 416S21 | 56AM | 1.4005 | X12CrS13 | 2380 | SUS 416 |
Possible Alternative Grades
Appropriate alternatives to grade 416 stainless steels are given in
the table below:
Table 5 - Possible alternatives to 416 grade stainless steels
| Grade | Why it might be chosen instead of 416 |
| 410 | The high machinability of 416 can be sacrificed to gain better
corrosion resistance and formability. |
| 303 | A slight drop in machinability to gain better availability. Grade
303 is non-hardenable. |
| 182 | A free-machining Ferritic grade with better "soft magnetic"
performance for solenoid shafts. Grade 182 is non-hardenable. |
Heat ResistanceGrade 416 steels are highly resistant to acids, alkalis, fresh
water and dry air. However, they are less corrosion resistant than
non-free-machining steels, austenitic grades and grade 430 Ferritic
alloys with 17% chromium. These steels are hardened to obtain
maximum corrosion resistance and smooth surface. 416 free-machining
grades with high sulphur content are inappropriate for chloride and
marine environments.
Scaling resistance of grade 416 steels under intermittent
conditions can be extended up to 760°C, and up to 675°C under
continuous operations. Considering the sustainability of mechanical
properties, 416 steels should not be employed at temperatures
greater than the standard tempering temperatures.
Heat Treatment
Full Annealing - Grade 416 steel can be annealed at temperatures of
815 to 900°C for ½ h. This process is followed by cooling at 30°C
for an hour and air-cooling.
Sub-Critical Annealing - Grade 416 steel is heated to 650 to 760°C
and air-cooled.
Hardening – This process involves heating grade 416 steels to 925
to 1010°C, oil quenching and tempering to improve mechanical
properties. Tempering should not be carried out at temperatures
ranging from 400 to 580°C, owing to poor ductility of grade 416.
Welding
Grade 416 steel exhibits poor weldability. Welding can be carried
by pre-heating 416 steels to 200 to 300°C, followed by
re-hardening, annealing or stress relieving at 650 to 675°C.
Grade 410 low hydrogen electrodes can be used for welding purposes.
Grade 309 filler rods can also be used for materials that require
moderate hardening.
Machining
Grade 416 steels offer the highest machinability of any stainless
steel in their sub-critical annealed condition.
Applications
Some of the major applications of grade 416 stainless steels are
listed below:
- Valves, pump shafts and motor shafts
- Parts of washing machines
- Gears, bolts, nuts and studs
- Automatic screw-machined components
Service:
Cutting our bars into any length. Cutting side is smooth without
burr.
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