Stainless Steel 410Cb Q&T 22HRC
Hardness band
UNS S41040 · AISI/SAE XM-30
Specify when NACE MR0175/ISO 15156-type sour service or H2S/SSC resistance caps hardness at 22 HRC.
Values for the Q&T 22HRC condition
Other 410Cb tempers and conditions
410Cb is listed in 6 conditions; see the grade overview at 410Cb.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AnnealedDefault subcritical/full anneal, soft ferritic + carbide condition | Standard stock condition for bar, plate and forgings: softest, most machinable and formable, ready for subsequent hardening. | 290 | 490 | 25 | 170 HB | — |
Normalized and tempered | Used for heavy forgings and weldments where full oil quenching risks distortion or cracking but medium strength is required. | 450 | 655 | 20 | 18 HRC | — |
Cold drawn | Choose for straight, close-tolerance bright bar and wire where modest strength gain and better surface finish are wanted without hardening. | 500 | 640 | 15 | 200 HB | — |
Q&T 22HRCThis page double tempered for sour-service hardness cap | Specify when NACE MR0175/ISO 15156-type sour service or H2S/SSC resistance caps hardness at 22 HRC. | 585 | 740 | 20 | 21 HRC | — |
Quenched and tempered | General-purpose hardened condition for valve trim, shafts, pump parts and fasteners needing strength plus reasonable toughness and corrosion behaviour. | 620 | 790 | 18 | 23 HRC | — |
Q&T high strength | Choose for wear parts, cutlery-type blades and hard seats where maximum hardness matters more than impact toughness; avoid 400–550 °C tempering (temper embrittlement). | 1,050 | 1,350 | 12 | 43 HRC | — |
What is 410Cb Q&T 22HRC?
410Cb Q&T 22HRC is 410Cb heat treated to Q&T 22HRC — specify when NACE MR0175/ISO 15156-type sour service or H2S/SSC resistance caps hardness at 22 HRC. 410Cb Q&T 22HRC has a yield strength of 585 MPa (84.8 ksi) and a tensile strength of 740 MPa (107 ksi) — stronger than 86% of stainless steel grades. Elongation at break is 20% and the elastic modulus is 200 GPa (29 Msi). 410Cb Q&T 22HRC has a density of 7.75 g/cm³ (0.28 lb/in³), lighter than 65% of stainless steel grades. It melts at 1,480°C (2,696 °F). Annealed is the default condition FabDigit quotes; Q&T 22HRC is available on request or by drawing note.
Advantages
- High electrical conductivity — 3 % IACS, better than 95% of stainless steel grades
- Low embodied carbon — 3.2 kg CO₂/kg, better than 95% of stainless steel grades
- Easy to machine — 50/100, better than 90% of stainless steel grades
- Conducts heat well — 24.9 W/m·K (14.4 BTU/hr·ft·°F), better than 87% of stainless steel grades
- High strength — 585 MPa (84.8 ksi), better than 86% of stainless steel grades
Limitations
- Needs corrosion protection — 38/100, worse than 95% of stainless steel grades
- Limited ductility — 20%, worse than 79% of stainless steel grades
- Low fracture toughness — 90 MPa·√m (81.9 ksi·√in), worse than 75% of stainless steel grades
410Cb Q&T 22HRC properties
Typical room-temperature values for 410Cb Q&T 22HRC; 10 are specific to this condition. Other listed values are 410Cb reference data and may not represent this condition. Bars are the position among stainless steel grades.
Physical3
410Cb Q&T 22HRC has a density of 7.75 g/cm³ (0.28 lb/in³), lighter than 65% of stainless steel grades. It melts at 1,480°C (2,696 °F).
Mechanical16
410Cb Q&T 22HRC has a yield strength of 585 MPa (84.8 ksi) and a tensile strength of 740 MPa (107 ksi) — stronger than 86% of stainless steel grades. Elongation at break is 20% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
410Cb Q&T 22HRC is rated for continuous service to 650°C (1,202 °F). It conducts heat at 24.9 W/m·K (14.4 BTU/hr·ft·°F), better than 87% of stainless steel grades. Thermal expansion is 9.9 µm/m·K (5.5 µin/in·°F).
Electrical3
410Cb Q&T 22HRC conducts electricity at 3 % IACS, better than 95% of stainless steel grades.
Chemical & Environmental3
Corrosion resistance is fair (38/100), worse than 95% of stainless steel grades.
Sustainability4
Producing a kilogram of 410Cb Q&T 22HRC takes about 45 MJ of energy and emits 3.2 kg of CO₂ — less than 91% of stainless steel grades. Typical recycled content is 60%.
Manufacturability7
410Cb Q&T 22HRC's machinability is fair (50/100, better than 90% of stainless steel grades); weldability good (60/100); formability fair (50/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 410Cb Q&T 22HRC
Is 410Cb easy to machine?
Machine in the annealed or ≤26 HRC tempered condition with sharp, rigid tooling, positive rake carbide and generous coolant; gummy chips and work hardening are the main issues — 410Cb cuts at roughly half the rate of 1212 free-cutting steel.
Can 410Cb be welded?
The main reason to choose this grade: Nb stabilization prevents HAZ chromium-carbide sensitization, but martensite still forms — preheat 200–300 °C, use 410/410NiMo or austenitic 309 filler, and post-weld temper ~700–760 °C for toughness.
Can 410Cb be formed, bent or molded?
Cold form only in the annealed condition with generous bend radii (≥2t); hot work 1150–1200 °C and cool slowly to avoid quench cracks, then always anneal or temper after hot working.
What surface finishes work on 410Cb?
Passivate per ASTM A967 (nitric or citric) after machining; can be electropolished, hard-chrome plated or nitrided; polishes to a good mirror finish in the hardened condition — never leave free iron or scale on the surface.
410Cb chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| C0.15 max per UNS S41040 | ≤ 0.15 | 0.1 |
| Mn | ≤ 1 | 0.6 |
| Si | ≤ 1 | 0.5 |
| P | ≤ 0.04 | 0.03 |
| S | ≤ 0.03 | 0.01 |
| Cr | 11.5 – 13.5 | 12.5 |
| Niresidual limit typical of mill practice | ≤ 0.75 | 0.35 |
| Nbcolumbium (Cb) stabilizer — ties up carbon as NbC | 0.05 – 0.3 | 0.15 |
| Fe | balance | — |
410Cb Q&T 22HRC — frequently asked
What is 410Cb Q&T 22HRC used for?
410Cb Q&T 22HRC is typically used for welded pump and valve components, petrochemical equipment and flanges. In short: weldable 410 variant; sensitization-resistant HAZ; service to 650 °C.
What is the yield strength of 410Cb Q&T 22HRC?
410Cb Q&T 22HRC has a typical yield strength of 585 MPa (84.8 ksi) and a tensile strength of 740 MPa (107 ksi) — stronger than 86% of stainless steel grades. Strength varies by condition: see the 6 listed tempers.
Is 410Cb Q&T 22HRC easy to machine?
Reasonably — machinability is rated fair (50/100, better than 90% of stainless steel grades). Machine in the annealed or ≤26 HRC tempered condition with sharp, rigid tooling, positive rake carbide and generous coolant; gummy chips and work hardening are the main issues — 410Cb cuts at roughly half the rate of 1212 free-cutting steel.
Can 410Cb Q&T 22HRC be welded?
Yes — weldability is rated good (60/100). The main reason to choose this grade: Nb stabilization prevents HAZ chromium-carbide sensitization, but martensite still forms — preheat 200–300 °C, use 410/410NiMo or austenitic 309 filler, and post-weld temper ~700–760 °C for toughness.
What surface finishes work on 410Cb Q&T 22HRC?
Passivate per ASTM A967 (nitric or citric) after machining; can be electropolished, hard-chrome plated or nitrided; polishes to a good mirror finish in the hardened condition — never leave free iron or scale on the surface.
Can 410Cb Q&T 22HRC be formed, bent or molded?
Cold form only in the annealed condition with generous bend radii (≥2t); hot work 1150–1200 °C and cool slowly to avoid quench cracks, then always anneal or temper after hot working.
What is the maximum service temperature of 410Cb Q&T 22HRC?
410Cb Q&T 22HRC is rated for continuous use to about 650°C (1,202 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 410Cb Annealed and 410Cb-CD?
Annealed is the default condition — standard stock condition for bar, plate and forgings: softest, most machinable and formable, ready for subsequent hardening. CD: choose for straight, close-tolerance bright bar and wire where modest strength gain and better surface finish are wanted without hardening. Yield strength is 290 MPa in Annealed versus 500 MPa in CD.
Sources
- ASTM A276/A276M Stainless Steel Bars and Shapes — ASTM International (2023)
- ASTM A479/A479M Stainless Steel Bars and Shapes for Pressure Vessels — ASTM International (2020)
- SAE/ASTM Unified Numbering System (UNS S41040, XM-30) — SAE International / ASTM (2017)
- ASM Specialty Handbook: Stainless Steels — ASM International (1994)
- ASM Handbook Vol.1: Properties and Selection — Irons, Steels, and High-Performance Alloys — ASM International (1990)
- Machinery's Handbook (machinability ratings for stainless grades) — Industrial Press (2020)
- NACE MR0175/ISO 15156-3 (hardness limits for martensitic stainless in sour service) — NACE/ISO (2020)
- SMM / Mysteel — SMM / Mysteel (2025)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.