Carbon Steel material center
Carbon steel pressure components for general and low-temperature service.
Compare ASTM A105 and ASTM A350 LF2 for flanges, forged fittings, and valve components, with service temperature and toughness requirements clearly separated.
- ASTM / ASMESpecification-led supply
- 2 grade routesOne focused source
- Global projectsExport documentation
Product routes
Start with the component. Then lock the material.
These links use the existing catalog structure. No additional material-by-product taxonomy archives are created.
Flanges
Weld neck, blind, slip-on, threaded, lap joint, and socket weld flange routes.
Browse flanges 02Pipe fittings
Elbows, tees, reducers, and end caps for welded or specified piping systems.
Browse pipe fittings 03Valves
Ball, gate, globe, check, and butterfly valve routes for process service.
Browse valvesGrade selector
Carbon Steel grade routes.
Use the cards to build a shortlist. Final suitability remains an engineering and code decision.
ASTM A105
Carbon steel forgings for piping applications
A common forged carbon steel material specification for pressure-system flanges, fittings, valves, and similar components in ambient and higher-temperature service.
ASTM A350 LF2
Notch-toughness-tested carbon steel forgings
A low-temperature forging grade used when the pressure component requires specified notch toughness and impact-test control.
ASTM A105 is commonly used for forged piping components in ambient and higher-temperature service. ASTM A350 LF2 is intended primarily for low-temperature service and includes notch-toughness requirements. Minimum design metal temperature and project impact criteria are the key decision inputs.
Procurement comparison
Translate the material name into order data.
The same commercial alloy name can map to different forging, fitting, and casting designations. State the complete material and product-form specification.
| Grade | Selection cue | Typical project context | Procurement control |
|---|---|---|---|
| ASTM A105 | Ambient and higher temperature | Oil and gas, chemical processing, utilities, water, and general industrial pressure piping. | Confirm heat treatment where required, pressure class, dimensional standard, supplementary testing, coating, and corrosion allowance. |
| ASTM A350 LF2 | Low-temperature service | Cold-climate installations, refrigerated process systems, gas processing, and low-temperature piping. | State LF2 class, minimum design metal temperature, impact-test temperature and energy, heat treatment, and project acceptance rules. |
Engineering note: This page supports early-stage procurement. The responsible engineer must verify corrosion, pressure, temperature, fabrication, compatibility, and code requirements.
RFQ readiness
Five controls for a comparable quotation.
A precise technical basis prevents substitutions and makes supplier offers easier to compare.
Send your requirement to SASA FLANGE- 01Component and quantity
Product type, size range, quantity, facing or end connection, and dimensional standard.
- 02Exact material route
ASTM specification, grade, UNS number where applicable, product form, and heat-treatment condition.
- 03Design conditions
Fluid, concentration, contaminants, design pressure and temperature, minimum metal temperature, and operating cycle.
- 04Fabrication controls
Welding, post-weld heat treatment, hardness, cleanliness, pickling or passivation, and repair restrictions.
- 05Inspection and records
Material certificates, PMI, NDE, pressure testing, corrosion tests, traceability, marking, and third-party inspection.
Standards map
Start with the governing product standard.
Official standards define scope and requirements. The purchase order should name the applicable edition required by the project.
Carbon steel forgings for piping applications at ambient and higher temperature.
Low-temperature forgingsASTM A350/A350MNotch-toughness-tested carbon and low-alloy steel forgings for low-temperature piping.
Flange dimensionsASME B16.5Pressure-temperature ratings, dimensions, tolerances, marking, and testing.
Technical FAQ
Direct answers for early material screening.
Structured for buyers, engineers, search engines, and future answer-engine retrieval.
What is Carbon Steel?
Carbon steel is the baseline material route for many industrial pressure systems, but “carbon steel” alone is not a procurement specification. Product form, service temperature, notch toughness, heat treatment, dimensional standard, and corrosion allowance must be stated.
How do I choose between the listed Carbon Steel grades?
ASTM A105 is commonly used for forged piping components in ambient and higher-temperature service. ASTM A350 LF2 is intended primarily for low-temperature service and includes notch-toughness requirements. Minimum design metal temperature and project impact criteria are the key decision inputs.
Can the same alloy designation be used for flanges, fittings, and valves?
The same alloy family can be used across a pressure system, but the ASTM grade designation can change with product form and manufacturing route. Confirm the forging, wrought-fitting, or casting specification together with the dimensional standard and pressure rating.
What should a Carbon Steel RFQ include?
Include component type, exact grade and UNS where applicable, ASTM product specification, size, schedule or bore, pressure class, facing or end connection, quantity, service conditions, heat treatment, testing, certification, marking, and inspection requirements.
Does the material standard also define flange, fitting, or valve dimensions?
Usually not. The purchase specification normally combines a material standard with a dimensional or pressure-rating standard such as ASME B16.5, B16.9, B16.11, B16.34, an EN or DIN standard, or a project-specific specification.
Procurement support
Turn the material shortlist into a controlled RFQ.
Send your component list, service conditions, project standards, and inspection requirements for a specification-led quotation.