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ASTM B193 B16 Alloy Round Bar Diameter 20 - 350mm for Bolt Structure Custom

China ASTM B193 B16 Alloy Round Bar Diameter 20 - 350mm for Bolt Structure Custom

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ASTM B193 B16 Alloy Round Bar Diameter 20 - 350mm for Bolt Structure Custom

MOQ： 1 Ton
Price： 800 - 1200 USD/Ton
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Payment Terms	L/C, T/T, Western Union
Supply Ability	20Ton per week
Delivery Time	5 - 12 days based on the quantity
Packaging Details	standard packing for export
Products Name	Alloy Steel Round Bar
Diameter	10 - 450mm
Length	6m
Tech	Hot rolled
Service	Cutting
MOQ	1 Ton
Loading Port	Shanghai Port
Standard	ASTM EN GB
Brand Name	DELTA
Model Number	B16
Certification	ISO
Place of Origin	China

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Product Specification


Payment Terms	L/C, T/T, Western Union	Supply Ability	20Ton per week
Delivery Time	5 - 12 days based on the quantity	Packaging Details	standard packing for export
Products Name	Alloy Steel Round Bar	Diameter	10 - 450mm
Length	6m	Tech	Hot rolled
Service	Cutting	MOQ	1 Ton
Loading Port	Shanghai Port	Standard	ASTM EN GB
Brand Name	DELTA	Model Number	B16
Certification	ISO	Place of Origin	China
High Light	ASTM B193 B16 alloy round bar ，steel round bar for bolt structure ，custom cutting steel round bar

ASTM B193 B16 Alloy Round Bar Diameter 20 - 350mm for Bolt Structure Custom Cutting in Length

Products Specification

Products Name	B16 Alloy Steel Round Bar
Diameter	10 - 350 mm
Length	6m or custom cutting any length as request
Type	Hot Rolled
Brand	BAOSTEEL DELTA DONGBEI HUAXI SHAGANG.etc
MOQ	1 Ton
Loading Port	Shanghai Port
Packing	packing by steel wire rope
Deliver time	5 - 7 days for stock materials
Other Grade	Q195,Q235,10#,20#,35#,45#,Q215,Q345,12Cr1Mov,15CrMo ,20Cr,40Cr,20CrMo,35CrMo,42CrMo,40CrNiMo,GCr15,65Mn,50Mn, 50Cr,3Cr2W8V,20CrMnTi,25Cr2MoVA,5CrMnMo ,38CrMoAl, 30CrMnSiA,B16,31CrMoV9
Standard	ASTM GB EN DIN
Application	Structure and Industrial

ASTM A193 B16 Alloy Round Bar Diameter 20 – 350mm for Bolt Structure – Custom Cutting in Length

Product Overview

ASTM A193 Grade B16 alloy round bar is a high-performance chromium-molybdenum-vanadium (Cr-Mo-V) steel specifically engineered for demanding high-temperature and high-pressure applications. Widely used in the power generation, petrochemical, and oil & gas industries, this material offers exceptional tensile strength, creep resistance, and structural integrity under extreme thermal and mechanical stress.

Our ASTM A193 B16 alloy round bars are manufactured to meet or exceed the requirements of ASTM A193/A193M standards (latest revision: ASTM A193/A193M-2017). Available in diameters ranging from 20 mm to 350 mm, these bars are ideal for producing critical bolting components such as studs, bolts, threaded rods, and fasteners used in turbines, pressure vessels, flanges, and valves.

All products undergo rigorous quality control, including full chemical analysis, mechanical testing, and non-destructive inspection. We offer custom cutting to length based on your engineering drawings or specifications, ensuring seamless integration into your manufacturing or maintenance workflow.

Key Features & Benefits

✅ High-Temperature Strength: Maintains mechanical properties up to 540°C (1000°F)
✅ Excellent Creep & Rupture Resistance: Ideal for long-term service in elevated temperature environments
✅ Quenched & Tempered (Q&T): Heat-treated to achieve optimal hardness and toughness
✅ Precise Dimensional Tolerances: Ground or peeled surface finish available upon request
✅ Custom Length Cutting: Minimizes waste and reduces machining time
✅ Traceable Mill Test Reports (MTRs): Full compliance with ASTM, ASME, and NACE standards

Chemical Composition (ASTM A193 Grade B16)

Element	Content (%)
Carbon (C)	0.36 – 0.47
Manganese (Mn)	0.45 – 0.70
Phosphorus (P)	≤ 0.035
Sulfur (S)	≤ 0.040
Silicon (Si)	0.15 – 0.35
Chromium (Cr)	0.80 – 1.15
Molybdenum (Mo)	0.50 – 0.65
Vanadium (V)	0.25 – 0.35
Aluminum (Al)	≤ 0.015

Note: Exact composition may vary slightly based on heat treatment and mill practices but remains within ASTM-specified limits.

Mechanical Properties

Property	Requirement
Tensile Strength	≥ 862 MPa (125 ksi)
Yield Strength (0.2% Offset)	≥ 725 MPa (105 ksi)
Elongation (in 4D)	≥ 32%
Reduction of Area	≥ 35%
Hardness	≤ 35 HRC (≈ 321 HB max)

Properties are typical values after quenching and tempering at ≥ 649°C (1200°F). Actual values depend on bar diameter and heat lot.

Heat Treatment Process

All ASTM A193 B16 round bars are supplied in the quenched and tempered (Q&T) condition:

Austenitizing: Heated to ～870–925°C (1600–1700°F)
Quenching: Rapidly cooled in oil or water
Tempering: Reheated to minimum 649°C (1200°F) and held for sufficient time to achieve desired mechanical properties

This process ensures a uniform microstructure with balanced strength and ductility—critical for safety-critical bolting applications.

Product Specifications

Parameter	Details
Standard	ASTM A193 / A193M (Grade B16)
Equivalent Grades	UNS K11547, DIN 1.7734, Chinese 40CrMoV
Diameter Range	20 mm – 350 mm (0.79" – 13.78")
Length Options	Standard: 3m, 6m; Custom cut-to-length available (min. 500 mm)
Surface Finish	Black hot-rolled, peeled, turned, or ground (upon request)
Tolerance	Per ASTM A484 or ISO 286 (h9/h11 as standard)
Certification	EN 10204 3.1 / 3.2, Mill Test Report (MTR), Chemical & Mechanical Reports
Packaging	Bundled with steel straps, waterproof wrapping, wooden crates for export

Common Applications

ASTM A193 B16 alloy round bars are primarily used to manufacture high-strength bolting components in severe service conditions:

Steam turbine bolts & studs (high-pressure sections)
Flange fasteners in refineries and chemical plants
Pressure vessel closures and manway bolts
Superheater headers and boiler connections
Power plant piping systems (main steam lines)
Offshore & onshore oil & gas wellhead assemblies

Due to its superior performance over standard carbon steel or even B7 bolts in temperatures above 400°C, B16 is the preferred choice for long-term reliability in critical infrastructure.

Why Choose Our ASTM A193 B16 Round Bars?

Strict Quality Control: Every batch is tested per ASTM E8 (tensile), E18 (hardness), and E45 (inclusion rating).
Global Compliance: Materials meet ASME BPVC Section II, NACE MR0175/ISO 15156 (for sour service when required).
Customization: We cut to your exact length—whether 1,250 mm for turbine studs or 4,800 mm for anchor bolts.
Fast Lead Time: Stock available in major diameters (20–150 mm); larger sizes (151–350 mm) produced within 4–6 weeks.
Technical Support: Our metallurgical team provides guidance on heat treatment, threading, and installation best practices.

Ordering Information

To place an order or request a quote, please provide the following details:

Required diameter (e.g., 50 mm, 120 mm, 250 mm)
Total length or cut lengths (e.g., “cut to 2,000 mm ±2 mm”)
Quantity (in metric tons or pieces)
Surface finish preference
Certification requirements (e.g., 3.1, PMI test, UT inspection)
Destination port (for FOB/CIF pricing)

We support small trial orders as well as large-volume contracts for OEMs and EPC contractors worldwide.

FAQs

Q: Is ASTM A193 B16 magnetic?
A: Yes—it’s a ferritic alloy steel and exhibits magnetic properties.

Q: Can B16 be welded?
A: Welding is possible but requires preheating (～200–300°C) and post-weld heat treatment (PWHT) to avoid cracking. Consult a welding procedure specification (WPS).

Q: What’s the difference between B7 and B16 bolts?
A: B7 (4140-based) is suitable up to ～400°C, while B16 (with added vanadium) offers better creep resistance above 450°C and is used in more severe thermal cycles.

Q: Do you supply matching nuts?
A: Yes—we recommend ASTM A194 Grade 16 heavy hex nuts and ASTM F436 hardened washers for full system compatibility.

Conclusion

For engineers and procurement professionals seeking reliable, high-temperature bolting solutions, ASTM A193 Grade B16 alloy round bar (20–350 mm diameter) represents the gold standard in performance and durability. With custom cutting services, full traceability, and global shipping capabilities, we ensure your project stays on schedule without compromising safety or quality.

ASTM A193 B16 round bar, B16 alloy steel bar, high-temperature bolt material, Cr-Mo-V steel bar, custom cut B16 bar, 20mm to 350mm alloy bar, quenched and tempered bolt stock, B16 stud material, ASTM A193 Grade B16, high-pressure fastener bar, equivalent to 40CrMoV, B16 vs B7 bolt steel.

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Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...

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