ASTM A437 Gr.B4D Round bar Stockist
| Product parameters | |
| Material Category:: | Turbine-type Bolting Alloy Steel |
| Material Technical Standards:: | ASTM A437 -2015 |
| Stocklist & Inventory Available:: | Diameter 15 ~ 230mm |
| Min. order quantity Per Batch:: | 200 KG |
| Certification:: | MTR, COC, Certificate of origin, Form A/E, Invoice, Packing list |
| Product Shapes:: | Round bar |
| Ultrasonic Test Standard:: | ASTM E2375 / MIL-STD- AMS 2154 / SEP 1923 / GB/T 4162 / EN 10228-3 / EN 10308 |
| Standard Export Packing Way:: | Wooden box, pallet / tray free from fumigation |
| Production Lead Time:: | Within 15 days after 30% deposit prepayable |
| Unified Social Credit Code:: | 91510871777942750J |
| Company ISO Register No:: | UQ211218R0 |
Description
TECHNICAL DATASHEET - ASTM A437-12 Grade B4D
TYPE OF STEEL: Middle carbon structural steel
Technical standards: ASTM A437 - 2012
MAIN CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (％): 0.36 ~ 0.44
Silicon, Si (％): 0.20 ~ 0.35
Manganese, Mn (％): 0.45 ~ 0.70
Phosphorus, P (％)≤: 0.040
Sulfur, S (％)≤: 0.040
Chromium, Cr (％): 0.80 ~ 1.15
Nickel, Ni (％): -
Molybdenum, Mo (%): 0.50 ~ 0.65
Vanadium, V (%): 0.25 ~ 0.35
Tungsten, W (%): -
Aluminum, Al (%): ≤ 0.015
Titanium, Ti (%): -
MECHANICAL PROPERTIES UNDER ROOM TEMPERATURE
Condition: Quenched 1025 ~ 1050℃, oil cooled
Tempered 620℃ min., air cooled
Annealed hardness: 248 max.
Tensile strength,σb/≥ MPa: 860
Yield strength, σ0.2/≥ MPa: 720
Elongation, δ ≥(％): 18.0
QT hardness: HB 302 max.
Impact /J: 34 min.
PRODUCT PROFILE & DIMENSION
Round bar & Disc (diameter): 5.5 to 500mm
Square bar / Flat bar: 10 to 500mm
TYPE OF STEEL: Middle carbon structural steel
Technical standards: ASTM A437 - 2012
MAIN CHEMICAL COMPOSITION (mass weight - %)
Carbon, C (％): 0.36 ~ 0.44
Silicon, Si (％): 0.20 ~ 0.35
Manganese, Mn (％): 0.45 ~ 0.70
Phosphorus, P (％)≤: 0.040
Sulfur, S (％)≤: 0.040
Chromium, Cr (％): 0.80 ~ 1.15
Nickel, Ni (％): -
Molybdenum, Mo (%): 0.50 ~ 0.65
Vanadium, V (%): 0.25 ~ 0.35
Tungsten, W (%): -
Aluminum, Al (%): ≤ 0.015
Titanium, Ti (%): -
MECHANICAL PROPERTIES UNDER ROOM TEMPERATURE
Condition: Quenched 1025 ~ 1050℃, oil cooled
Tempered 620℃ min., air cooled
Annealed hardness: 248 max.
Tensile strength,σb/≥ MPa: 860
Yield strength, σ0.2/≥ MPa: 720
Elongation, δ ≥(％): 18.0
QT hardness: HB 302 max.
Impact /J: 34 min.
PRODUCT PROFILE & DIMENSION
Round bar & Disc (diameter): 5.5 to 500mm
Square bar / Flat bar: 10 to 500mm
