Product Description
SUH1 heat-resistant steel, a martensitic heat-resistant steel, has a slightly higher chromium content, which improves its oxidation resistance and thermal strength, and reduces its sensitivity to temper embrittlement. SUH1 heat-resistant steel is used for manufacturing intake valves of internal combustion engines and exhaust valves operating at temperatures below 700 ºC. It can also be used for manufacturing furnace components operating at temperatures below 850 ºC
| Grade | C | Si | Mn | P | S | Cr | Ni |
| minimum value | 0.4 | 2.7 | - | - | - | 8 | - |
| Maximum value | 0.5 | 3.3 | 0.6 | 0.04 | 0.03 | 10 | 0.5 |
| GB | ISC | CNS | JIS | KS | Commercial brand | UNS | SAE | ISO | DIN EN/DIN | W-Nr. | NF EN/NF | EN | Digital brand | GOST | BS EN/BS |
| 42Cr9Si2 (4Cr9Si2) | S48040 | 1 | SUH 1 | STR 1 | Sil 1 | S65007 | HNV3 | X45CrSi 9-3 | X45CrSi 9-3 | 1.4718 | Z45CS 9 | X45CrSi 8 | 1.4718 | 40Х9С2 | 401S45 |
ALLOY STRUCTURE STEEL | |||||
Grade | AISI /ASTM | DIN (W.Nr) | JIS | EN/ BS | GB |
5120 | 5120 | 1.7027 /21Cr4 | SCr420 | 20Cr | |
530M40 /5140 | 530M40 /5140 | 1.7035 /41Cr4 | SCr440 | 40Cr | |
5145 | 5145 | Scr445 | 45CR4 | ||
4118 | 4118 | 1.7243 /18CrMo4 | SCM418 / SCM420 | 20CrMo | |
4135 | 4130 | 1.7218 /25CrMo4 | SCM430 | 708A25/ 708M25 | 30CrMo |
4140 | 4140 | 1.7225 /42CrMo4 | SCM440 | EN19/ 709M40 | 42CrMo |
4340 | 4340 | 1.6582/ 34CrNiMo6 | SNCM 439/ SNCM8 | EN24/ 817M40 | 40CrNi2Mo |
8620 | 8620 | 1.6523/ 21NiCrMo2 | SNCM220 | 805M20 | 20CrNiMo |
CARBON STEEL | |||||
20 | 1020 | C22. CK22 | S20C | EN3B /070M20 | 20 |
35 | 1035 | C35.CK35 | S35C | 35 | |
45 | 1045 | C45.CK45 | S45C | EN8D/C45E | 45 |
50 | 1050 | CK53 | S50C | EN9/070M55 | 50 |
Q355 | S355J /ST52 | EN14 | Q355 | ||
30Mn | 1030.1033 | S30C | 30Mn | ||
30Mn2 | 1330 | 30Mn5 | SMn433h | 30Mn2 | |
| condition | Heat treatment or state | tensile strength σb Mpa | yield point σs Mpa | Elongation or elongation after fracture δ % | Reduction of area ψ % | hardness HBW |
| steel products | +A | HB:≤ 300 | ||||
| steel products:d≤40 | +QT | 900 to 1100 | 700 | 14 | 40 | HB:266 to 325 |
| Static modulus of elasticity | Coefficient of thermal expansion between 20 ° C and various temperatures | Thermal conductivity | Specific heat capacity | magnetism | |||
| 20°C | 100°C | 300°C | 500°C | 700°C | 20°C | 20°C | have |
| KN/mm2 | 10-6 K-1 | W/m.K | J/kg.K | ||||
| 210 | 10.9 | 11.2 | 11.5 | 11.8 | 21 | 500 | |
High temperature tensile strength
| Designation | Reference heat treatment condition | Tensile strength at: N/mm2 | |||||||
| Name | Number | 500°C | 550°C | 600°C | 650°C | 700°C | 750°C | 800°C | |
| X45CrSi9-3 | 1.4718 | +QT | 500 | 360 | 250 | 170 | 110 | - | - |
| 1.The values given here are situated near the lower limit of the scatter range. 2.This grade should not be used at 700°C and above. |
High temperature yield strength
| Designation | Reference heat treatment condition | 0.2% proof strength at: N/mm2 | |||||||
| Name | Number | 500°C | 550°C | 600°C | 650°C | 700°C | 750°C | 800°C | |
| X45CrSi9-3 | 1.4718 | +QT | 400 | 300 | 240 | 120 | 80 | - | - |
| 1. The values given here are situated near the lower limit of the scatter range. 2. This grade should not be used at 700°C and above. |
Creep strength
| Designation | Creep strength after 1000 h at: N/mm2 | ||||
| Name | Number | 500°C | 650°C | 725°C | 800°C |
| X45CrSi9-3 | 1.4718 | 190 | 40 | - | - |
| Mean values of scatter range determined until now. |
Heat Treatment Guidelines
| Designation | Hot forming ºC | Soft annealing ºC | Quenching or solution heat treatment ºC | Quenching agent | Tempering or artificial ageing ºC | |
| Name | Number | |||||
| X45CrSi9-3 | 1.4718 | 1100 to 900 | 780 to 820 a or w | 1000 to 1050 | o | 720 to 820 a or w |
Packaging | 1. by bundles, each bundle weight under 3 tons, for small outer diameter steel bars, each bundle with 4 - 8 steel strips. 2. after making by bundle, covered with Polyethylene waterproof cloth. 3. make black paints painting on each bar, then make bundles |
| 20 feet container contains dimension | Length under 6000mm |
| 40 feet container contains dimension | Length under 12000mm |
| By bulk vessel | Freight charge is low by bulk cargo, and large heavy sizes can not be loaded into containers can shipping by bulk cargo |
1. Who are we?
Our headquarter is located in Shandong, China. Since 2023, we have sold to North America (60.00%), Western Europe (14.00%) and South America (6.00%). There are about 11-50 people in our office.
2. How do we guarantee quality?
Always provide pre-production samples before mass production;
Always carry out final inspection before shipment;
3. What can you buy from us?
Copper, aluminum, die steel, titanium, customized machine parts
4. Why should you buy from us instead of other suppliers?
The company has 25 years of production experience. It has advanced precision production equipment, modern large warehouse, 200000 tons of inventory goods and a number of long-term stable cooperative customers.
5. What services can we provide?
Accepted delivery conditions: FOB, CFR, CIF, EXW
Accepted payment currency: US dollar, Euro, Japanese yen, Canadian dollar, Australian dollar, Hong Kong dollar, British pound, RMB, Swiss franc;
Accepted payment type: T/T, L/C, D/P D/A, PayPal;
Optional ports: Tianjin, Shanghai, Guangzhou;
Spoken: English, Chinese
6. How can we get your price?
A. We need the following information to quote for you:
1). Product Name
2). standard
3). Material grade (chemical composition)
4). dimension
5). amount
6). Special part drawing