ALLOY STEEL AISI 4140 FASTENERS

Leading Manufacturer & Supplier of high-class ASTM A193 Alloy Steel AISI 4140 Fastener / ASTM A194 AS AISI-SAE 4140 Fasteners in India.

Alloy Steel AISI 4140 Bolts, AISI 4140 Nuts, ASTM A320 AISI 4140 Screws, UNS G41400 Alloy Steel Stud Bolts Fasteners, AISI 4140 Washers, SAE 4140 Threaded Rod Exporter & Stockists in India

Star Steel Works is one of the largest manufacturer, exporter, and supplier of Alloy Steel AISI 4140 FASTENERS in India. These fasteners can be provided by us in different finish sizes. In addition, to match companies of the precise progression demands of the customers. Available in different specifications, a great number of different industries find these fasteners use in the chemical industry, boiler machinery, oil industry, electric power, and so on. On the other hand, we have ability to offer non-standard sizes as required by the customers.

For More details on ALLOY STEEL AISI 4140 FASTENERS feel free to contact us on +91 9619984779 or reach us on enquiry@starsteelworks.com.

AISI 4140 L7 ASTM A320 Bolts

AISI 4140 L7 ASTM A320 Nuts

Available Alloy Steel Fasteners Grades
AISI 4140 Fasteners Chemical Composition
Element
Content (%)
Iron, Fe
96.785 – 97.77
Chromium, Cr
0.80 – 1.10
Manganese, Mn
0.75 – 1.0
Carbon, C
0.380 – 0.430
Silicon, Si
0.15 – 0.30
Molybdenum, Mo
0.15 – 0.25
Sulfur, S
0.040
Phosphorous, P
0.035
AISI 4140 Fasteners Physical Properties
Properties
Metric
Imperial
Density
7.85 g/cm3
0.284 lb/in³
Melting point
1416°C
2580°F
AISI 4140 Fasteners Mechanical Properties
Properties
Metric
Imperial
Tensile strength
655 MPa
95000 psi
Yield strength
415 MPa
60200 psi
Bulk modulus (typical for steel)
140 GPa
20300 ksi
Shear modulus (typical for steel)
80 GPa
11600 ksi
Elastic modulus
190-210 GPa
27557-30458 ksi
Poisson’s ratio
0.27-0.30
0.27-0.30
Elongation at break (in 50 mm)
25.70%
25.70%
Hardness, Brinell
197
197
Hardness, Knoop (converted from Brinell hardness)
219
219
Hardness, Rockwell B (converted from Brinell hardness)
92
92
Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only)
13
13
Hardness, Vickers (converted from Brinell hardness)
207
207
Machinability (based on AISI 1212 as 100 machinability)
65
65
AISI 4140 Fasteners Thermal Properties
Properties
Metric
Imperial
Thermal expansion co-efficient (@ 0-100°C/32-212°F)
12.2 µm/m°C
6.78 µin/in°F
Thermal conductivity (@ 100°C)
42.6 W/mK
296 BTU in/hr.ft².°F
AISI 4140 Fasteners Other Designations
AMS 6349
ASTM A193 (B7, B7M)
ASTM A506 (4140)
ASTM A752 (4140)
AMS 6381
ASTM A194 (7, 7M)
ASTM A513
ASTM A829
AMS 6382
ASTM A29 (4140)
ASTM A513 (4140)
SAE J1397 (4140)
AMS 6390
ASTM A320 (L7, L7M, L7D)
ASTM A519 (4140)
SAE J404 (4140)
AMS 6395
ASTM A322 (4140)
ASTM A646 (4140)
SAE J412 (4140)
AMS 6529
ASTM A331 (4140)
ASTM A711