ASTM A240 Type 420 | UNS S42035 Stainless steel plate
What is A240 Type 420 or UNS S42035 Stainless steel?
As a professional China steel mill-Direct Supply and stainless steel plate supplier, SHH STEEL is pleased to present A240 Type 420 | UNS S42035 Stainless Steel Plate.
This product family is searched under several names. Buyers should distinguish two related but different A240 grades:
- ASTM A240 Type 420 / AISI 420 / UNS S42000 / SUS420 / 1.4021 / 1.4028 / X20Cr13 / X30Cr13 — the classic high-carbon martensitic 12–14% Cr grade used for cutlery, tools and wear parts.
- ASTM A240 UNS S42035 / S42035 plate / 1.4589 / X5CrNiMoTi15-2 / 06Cr14Ni2MoTi — a separate A240 grade with low carbon (≤ 0.08%), 13.5–15.5% chromium, 1.0–2.5% nickel, 0.2–1.2% molybdenum and 0.3–0.5% titanium.
SHH STEEL focuses on UNS S42035, which is listed in ASTM A240 / ASME SA240 without a traditional AISI Type number. It is often grouped commercially with the 420 family, but it is not the same as Type 420 (S42000). S42035 is a titanium-stabilized, low-carbon chromium stainless steel designed for better weldability and improved corrosion resistance compared with standard 420, while remaining magnetic.
SHH STEEL supplies UNS S42035 as true China steel mill-Direct Supply, sourcing directly from major Chinese stainless steel mills. This model delivers competitive mill pricing, consistent quality, complete heat traceability and reliable delivery. SHH STEEL also supports related 400-series plates such as A240 410, A240 410S, A240 430 and A240 439.
If your drawing specifies Type 420 / S42000, please state the UNS number clearly so SHH STEEL can quote the correct grade.
Material Specification
| Specification Element | Requirement | SHH STEEL Compliance |
|---|---|---|
| Grade | ASTM A240 UNS S42035 | Confirmed |
| Related Standards | ASTM A240, ASME SA240, EN 1.4589 related | Available |
| Product Form | Plate, Sheet | Available |
| Delivery Condition | Annealed | Standard |
| Thickness Range | 0.5 mm – 50 mm (thicker available on request) | Custom sizes supported |
| Width | Up to 1500–2000 mm | Available |
| Length | Up to 6000–12000 mm or cut-to-length | Available |
| Surface Finish | 2B, No.1, and others on request | Available |
| Certification | EN 10204 3.1 / Mill Test Certificate | Available |
SHH STEEL can supply dual-certified ASTM A240 / ASME SA240 S42035 material when required by the project.
Chemical Composition
Typical Chemical Composition of UNS S42035 (ASTM A240):
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Silicon (Si) | ≤ 1.00 |
| Manganese (Mn) | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Chromium (Cr) | 13.50 – 15.50 |
| Nickel (Ni) | 1.00 – 2.50 |
| Molybdenum (Mo) | 0.20 – 1.20 |
| Titanium (Ti) | 0.30 – 0.50 |
| Iron (Fe) | Balance |
UNS S42035 is defined by low carbon, titanium stabilization, plus nickel and molybdenum. Titanium combines with carbon to reduce the risk of intergranular corrosion after welding. Nickel improves toughness, and molybdenum improves pitting resistance versus plain 12–13% Cr grades. This chemistry is clearly different from Type 420 (S42000), which requires a minimum of 0.15% carbon and is intended for hardening.
Mechanical Properties
Annealed Condition per ASTM A240 (UNS S42035)
| Property | Value |
|---|---|
| Tensile Strength | ≥ 550 MPa (80 ksi) |
| Yield Strength (0.2%) | ≥ 380 MPa (55 ksi) |
| Elongation (in 50 mm) | ≥ 16% |
| Hardness | ≤ 180 HBW / 88 HRBW |
S42035 is supplied by SHH STEEL in the annealed condition with the A240 minimum strength values above. It is magnetic. Unlike standard Type 420, it is not specified as a high-carbon hardenable cutlery grade.
Physical Properties
Density is approximately 7.70–7.80 g/cm³. Melting range is approximately 1480–1530°C.
Material Comparison
| rade | UNS | Carbon | Key Alloying | Hardenable | Typical Preference |
|---|---|---|---|---|---|
| Type 410 | S41000 | ≤ 0.15 | 11.5–13.5 Cr | Yes | General martensitic service |
| Type 420 | S42000 | ≥ 0.15 | 12–14 Cr | Yes | Cutlery, wear, high hardness |
| S42035 | S42035 | ≤ 0.08 | 13.5–15.5 Cr + Ni + Mo + Ti | No (A240 annealed) | Welded plate with better corrosion |
| Type 430 | S43000 | ≤ 0.12 | 16–18 Cr | No | General ferritic service |
| Type 439 | S43035 | ≤ 0.07 | 17–19 Cr + Ti | No | Stabilized ferritic / exhaust |
| Type 444 | S44400 | ≤ 0.025 | 17.5–19.5 Cr + Mo + Ti/Nb | No | Higher chloride ferritic service |
S42035 should not be substituted for Type 420 when high hardness after quench and temper is required. For wear and cutting applications, SHH STEEL recommends confirming whether the drawing means S42000. For welded plate needing better corrosion than A240 410 or A240 410S, S42035 is the correct A240 option. For higher chromium ferritic service, compare with A240 430, A240 439 and A240 444.
Corrosion Resistance
UNS S42035 offers better general and pitting resistance than standard 410/420 because of its higher chromium, molybdenum and titanium stabilization. It performs well in mild atmospheres, fresh water, many food-contact and automotive environments, and welded fabrications where intergranular attack must be avoided.
It is not equivalent to austenitic grades such as a240 304 or a240 316l in chloride or acid service. For more aggressive chlorides, SHH STEEL recommends upgrading to molybdenum-bearing ferritic or austenitic grades.
Weldability
S42035 has better weldability than high-carbon Type 420. The low carbon content and titanium addition reduce the risk of intergranular corrosion in the heat-affected zone. Matching or 400-series / appropriate stainless filler metals are selected according to the design.
Preheating and post-weld heat treatment requirements depend on thickness and joint design. SHH STEEL recommends proper welding procedures and post-weld cleaning. If the part must be hardened after fabrication, Type 420 (S42000) should be specified instead.
Heat Treatment
UNS S42035 plate is normally supplied in the annealed condition by SHH STEEL.
Annealing is used to restore ductility after cold working and to meet ASTM A240 mechanical limits. Because carbon is limited to 0.08%, this grade is not intended as a quench-and-temper cutlery steel. SHH STEEL controls heat treatment to ensure consistent hardness, strength and corrosion performance.
Surface Finishes
| Finish | Description | Typical Use / Keywords |
|---|---|---|
| 2B | Cold-rolled, annealed, pickled, skin-passed | S42035 2B – most common for sheet and thin plate |
| No.1 | Hot-rolled, annealed and pickled | S42035 No.1 / A240 S42035 No.1 – industrial plate |
| Special | Ground or custom finishes | S42035 Special – on request |
SHH STEEL regularly supplies UNS S42035 in 2B and No.1 finishes.
Tolerances
Dimensional tolerances for A240 UNS S42035 Stainless Steel Plate supplied by SHH STEEL generally conform to ASTM A480 practices.
Typical available size range is thickness 0.5 mm – 50 mm, width up to 1500–2000 mm, and length up to 6000–12000 mm or cut-to-length. SHH STEEL provides precise dimensional control and can support tighter tolerances when required.
Equivalent Material Grades
| Grade / Designation | Standard / Region | Notes |
|---|---|---|
| UNS S42035 | ASTM A240 / ASME SA240 | Primary designation |
| 1.4589 / X5CrNiMoTi15-2 | EN (Europe) | Closest European equivalent |
| 06Cr14Ni2MoTi | GB/T (China) | Chinese related grade |
| Type 420 / UNS S42000 | ASTM A240 | Related but different 420 grade |
| Related 410 / 430 / 439 | Multiple | Nearby 400-series options |
Related grades for comparison include A240 410, A240 410S, A240 429, A240 430, A240 439 and A240 444.
Applications
UNS S42035 is selected for welded plate applications that need better corrosion resistance than 410/420 without moving to austenitic grades. Typical applications of S42035 include:
| Industry / Sector | Typical Components / Equipment (with keywords) |
|---|---|
| Automotive & Exhaust | S42035 heat shields, stamped parts and welded components |
| Process Equipment | S42035 tanks, covers, liners and fabricated plate parts |
| General Engineering | S42035 frames, brackets and structural fabrications |
| Food & Household Equipment | S42035 parts in mild corrosive service |
| Construction & Architecture | S42035 panels and fabricated assemblies |
| Machinery | S42035 machine covers and welded housings |
SHH STEEL supplies S42035 for these applications with consistent quality. For related industry solutions, see our equipment manufacturing, construction industry and machinery industry pages. Supporting services include steel cutting services and steel welding services.
Why Choose SHH STEEL
SHH STEEL is a China steel mill-Direct Supply specializing in stainless steel plate and sheet. By working directly with major Chinese stainless steel mills, SHH STEEL supplies A240 UNS S42035 with the following advantages:
- Genuine China steel mill-Direct Supply pricing
- Consistent quality and complete heat traceability
- Full Mill Test Certificates (EN 10204 3.1)
- Clear grade identification so Type 420 (S42000) is not mixed with S42035
- Flexible dimensions and surface finishes (including S42035 2B and S42035 No.1)
- Technical support for selection among 410, 410S, 420 / S42000, S42035, 430 and 439
- Value-added services including steel cutting services, steel welding services and worldwide shipping service
For more information about our company and full product range, please visit China steel Mill Agent-SHH STEEL.
FAQ
- Is A240 Type 420 the same as UNS S42035?No. Type 420 is UNS S42000, a high-carbon martensitic grade. UNS S42035 is a separate A240 grade with low carbon plus Ni, Mo and Ti. SHH STEEL asks customers to confirm the UNS number before production.
- What are the other common names for UNS S42035?S42035 is also searched as ASTM A240 S42035, 1.4589, X5CrNiMoTi15-2 and 06Cr14Ni2MoTi. SHH STEEL can certify the required designation.
- Can S42035 replace Type 420 for knives or wear parts?Generally no. Type 420 (S42000) is used when high hardness after heat treatment is required. S42035 is for welded plate with better corrosion resistance. SHH STEEL can quote both grades.
- Is S42035 magnetic?Yes. SHH STEEL supplies annealed S42035 plate in the magnetic condition.
- What is the density of S42035?Approximately 7.70–7.80 g/cm³. SHH STEEL provides mill certificates confirming chemistry and mechanical properties.
- Is S42035 easy to weld?Yes, better than high-carbon Type 420 because carbon is limited to 0.08% and titanium is added. SHH STEEL recommends proper welding procedures for thicker plate.
- Does SHH STEEL supply dual-certified ASTM A240 / UNS S42035 material?Yes, SHH STEEL commonly supplies dual-certified material upon request.
Conclusion
A240 UNS S42035 Stainless Steel Plate is a low-carbon, titanium-stabilized chromium grade with nickel and molybdenum. It should not be confused with standard Type 420 (UNS S42000). S42035 is the correct choice when the project needs A240 plate with improved weldability and corrosion resistance in the 420 family range, rather than a hardenable cutlery steel.
As a professional China steel mill-Direct Supply, SHH STEEL provides high-quality S42035 Stainless Steel Plate with competitive pricing, full certification and complete technical support.
Contact SHH STEEL today for stock availability, surface finish options (including S42035 2B and S42035 No.1), or a competitive quotation. Please confirm whether you need S42035 or Type 420 / S42000.
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